Abstract: The invention relates to an uncured thermal and/or sound insulation product, based on mineral wool, advantageously on glass wool, that is in the form of a ply comprising a mineral wool layer sized by at least one binder, said sized layer having: a surface density, or basis weight, of less than or equal to 350 g/m2, preferably less than or equal to 300 g/m2, or less than or equal to 250 g/m2, and, optionally, greater than or equal to 200 g/m2, a micronaire of at most 3 under 5 grams, preferably of at most 15 l/min, better still of at most 12 l/min, and of at least 9 l/min, and the ply having a thickness of greater than 10 mm, or greater than or equal to 15 mm, or even greater than or equal to 25 mm. The invention makes it possible to propose a thermal and/or sound insulation product that is lighter while retaining satisfactory thermal and/or sound insulation properties and a good mechanical strength.

Abstract: A ceiling system for use in an interior building environment. In one aspect, the invention may be a ceiling system comprising: a frame comprising a plurality of struts; a plurality of modules, each of the modules comprising a panel and a plurality of hook members coupled to and extending from a top surface of the panel; each of the hook members comprising: an upstanding section; a hook portion at a top end of the upstanding section, the hook portion defining a downwardly-facing open slot; and an attachment flange at a bottom end of the upstanding section that couples the hook member to the top surface of the panel; and the modules mounted to the frame, and wherein for each of the modules, the hook portions of the hook members fit over and rest upon the struts, the struts located in the downwardly-facing open slots of the hook portions.

Abstract: The present invention is directed to a method for providing a surface, in particular a floor surface, with a layer of a magnetic and/or magnetizable cover composition, the surface having at least one layer of cementitious material, wherein the method comprises the step of spreading the layer of the cover composition onto the surface, the cover composition comprising a polymeric binder and magnetic and/or magnetizable particles, characterized in that the layer of the cover composition has a water vapor transmission rate of at least 0.25 g h?1 m?2 according to ASTM D1653, and the surface and/or the layer of cementitious material has a relative humidity of more than 75% according to ASTM F 2170-11.

Abstract: The invention provides a waterproofing membrane which does not require a removable release sheet but which nevertheless bonds to post-cast concrete and facilitates water-tight sealing at membrane-to-membrane overlaps. The waterproofing membrane comprises a carrier and pressure-sensitive adhesive (PSA) layers, an inorganic particle layer having particulate bodies which are partially embedded in the PSA and which have an average particle size less than the average thickness of the PSA layer, and an anti-submarining nano-silica-containing coating layer attached to un-embedded portions of the inorganic particles to prevent total embedding into the PSA when the membrane is rolled or unrolled, whereby water-tight seams are facilitated between overlapped portions of adjacently installed waterproofing membranes, and whereby the water-tight seam is achieved preferably using only detailing or waterproofing tape and without the additional use of a liquid primer, mastic, or other coating.

Abstract: A ceiling system for use in the interior building environment. In one aspect, the invention may be a ceiling system comprising: a plurality of first struts and a plurality of second struts, the second struts intersecting the first struts; a plurality of panels; for each of the plurality of panels, a plurality of hook members attached to the panel; and wherein for each of the plurality of panels, the plurality of hook members comprise a first hook member coupled to one of the first struts and a second hook member coupled to one of the second struts.

Abstract: Disclosed is an exterior finish system for building structures that includes a water pervious adhesive for securing an insulation layer to a water resistive barrier applied to a building wall substrate. Also disclosed is a building structure such as a building column or wall that includes the finish system and a method of using the finish system to assemble a building structure such as a column or wall.

Abstract: The invention relates to a process for sealing an above-ground or underground construction. In particular it involves the use of non-reactive hot melt adhesives and flexible polyolefin films. This procedure in particular has the advantages that good and long-lasting adhesion can be achieved very quickly, and that in particular by using polyolefin strips coated with non-reactive hot melt adhesives, insulating strips can be obtained simply which are non-tacky at room temperature and can be processed and bonded easily at the construction site.

Abstract: The invention relates to a building section including a sub-structure and a cladding member connected in fixed relation relative to the sub-structure. A multi-function elongate, flexible insulating element is disposed between the sub-structure and the cladding member for damping energy transfer between the cladding member and the sub-structure, facilitating alignment of the cladding, and creating a rainscreen configured to drive out moisture from the wall cavities. The flexible insulating element includes a bond breaker disposed on the external surface of the insulating element. The bond breaker prevents externally applied joint sealant compound from adhering to the insulating element. The bond breaker can act as a safeguard to prevent joint sealant deterioration or adhesion to undesired surfaces.

Abstract: An insulating composite panel (ICP) 100, has an initial thermal resistance (R value) greater than about 50 ft2·° F.·h/Btu (8.8 K·m2/W) at a thickness less than 2.0 in (51 mm). The ICP is preassembled with a vacuum insulation panel (VIP) 102 protected by a lower rigid cover board 104 adhered to a lower surface of the VIP by a lower grid of adhesive ribbons 108, and by an upper rigid cover board 106 adhered to an upper surface of the VIP by an upper grid of adhesive ribbons 110. Each of the adhesive grids 108, 110 is augmented by a respective continuous ribbon of adhesive 112, 114 along the entire perimeter of each respective interface between the VIP 102 and each respective cover board 104, 106. The ICP has high resistance to wind uplift, mold, and fire, and low mass per unit area.

Abstract: A water impermeable structure comprising a plurality of construction boards fastened to a structure or a building. Each construction board comprises a curable substrate and a water impermeable seamless resilient membrane adhered to the curable substrate. The water impermeable seamless resilient membrane comprises one or more flaps that extend beyond the curable substrate. The flaps affix to the adjoining construction board creating a water impermeable structure and a water impermeable structure with at least one water impermeable area.

Abstract: A low cost method for constructing barriers to eliminate a flat or low pitch roof's low spots. Puddles, if allowed to stand there, shorten the roof's life and can do structural damage to the roof deck. Each barrier includes a flexible membrane initially sized and shaped and then positioned to cover at least one low spot and substantially overlap the latter's edges. So positioned, the membrane is heat welded or otherwise joined to form a continuous watertight seal, along its outer periphery, between the membrane and an existing roof deck covering and, when the low spot is next to a parapet, the existing parapet covering as well. Filled with a solidified plastic foam sandwiched between the membrane and the existing covering(s), such barriers, once they have been mechanically fastened to the roof deck and, if necessary, to the parapet, permanently direct storm water away from each of the roof's barrier-covered low spots.

Abstract: A monolithic protective waterproofing system for light rail and intermodal class I railroad bridges comprehends a multiple layer product installed in-situ. It includes a sprayed on primer, a sprayed on membrane having a thickness of between 60 and 120 mils, a second sprayed on layer of membrane having a thickness of about 20 mils that is utilized as an adhesive that is rapidly covered with a resilient mat having a thickness of between approximately 6 and 12 mm, a second layer of a sprayed on primer and a top coat of sprayed on membrane of approximately 30 to 50 mils. Both the product and method of installation are disclosed.

Abstract: Disclosed is a waterproofing membrane that comprises a carrier sheet, a pressure sensitive adhesive layer on one surface of the carrier sheet, and a protective coating layer on the adhesive layer. The protective coating layer comprises a highly reflective protective coating layer operative to bond to concrete cast against it, particularly one that is produced from an aqueous coating comprising an acrylic emulsion, a filler, and a white pigment. The pigment volume concentration of the filler plus white pigment is greater than or equal to 55% by volume. The protective coating layer protects the membrane against weather exposure, tolerates foot traffic and strongly adheres to concrete cast against it. Also disclosed is a waterproofing membrane comprising a carrier sheet, a pressure sensitive adhesive layer, a protective coating layer, and a highly releasable bonding layer. The preferred highly releasable bonding layer comprises nanoscale silica and a binder.

Abstract: Disclosed is an exterior finish system for building structures that includes a water pervious adhesive for securing an insulation layer to a water resistive barrier applied to a building wall substrate. Also disclosed is a building structure such as a building column or wall that includes the finish system and a method of using the finish system to assemble a building structure such as a column or wall.

Abstract: A new concept wall system is provided, wherein the Exterior Insulation and Finish System cladding is created using components with no water absorption, a very low vapor permeability and sealing properties, accommodated with an installation technology which extend the materials properties to the assembly, together with bonding and sealing the intersections and terminations, creating a Non-Permissive to water and vapor diffusion, Exterior Insulation and Finish System (NP-EIFS). The present invention relates to an EIFS cladding having two air and vapor barriers, one applied to the substrate, a continuous liquid membrane with sheathing joints sealed to be moisture barrier for inside vapors, and an exterior weather and vapor barrier which is created using closed cell extruded polystyrene insulation boards, special assembled with joints sealed, to create a non-permissive insulation envelope of the enclosure.

Abstract: An insulation system for coupling to a building substrate comprising a plurality of insulation panels, bracket members and splice members. Each insulation panel includes a longitudinal slot. Each bracket member is formed from a polymer and includes an elongated body having a body wall, a first end wall and a second end wall. Upper and lower ribs extend from the body wall and are structurally configured to extend into the longitudinal slot of each of the plurality of insulation panels, and to elastically deform the longitudinal slot so as to effectively seal along a length thereof, defining a vapor barrier. A similar structure is on each splice member. The bracket members are positioned in a spaced apart relationship with insulation panels therebetween. The upper and lower ribs extend into corresponding ones of the longitudinal slots of the insulation panels, with splice members extending between adjacent adjacently abutting insulation panels.

Abstract: A roof attachment assembly for mounting to a roof substrate. The roof attachment assembly comprises a plate having a substantially frustoconical protrusion defining an aperture extending therethrough, the plate defining a first surface and a second surface, the first surface facing the roof substrate and the second surface spaced from the roof substrate. The roof attachment assembly also comprises a membrane positioned adjacent one of the first surface and the second surface of the plate, and a bracket positioned proximate the second surface of the plate, the bracket operable to support one or more roof mounted fixtures. The roof attachment assembly further comprises a fastener extending through the bracket, the membrane and the plate, the fastener operable to couple the bracket, the membrane and the plate together, wherein the roof substrate is contiguous adjacent to an end of the fastener.

Abstract: A load bearing structure including a first fixed net layer, a second fixed net layer and a non-linear structure in between. The first fixed net layer may include a first layer of flexible fabric and a fixing material that fixes the shape of the first layer of flexible fabric. The second fixed net layer may include a second layer of flexible fabric and a fixing material that fixes the shape of the second layer of flexible fabric. The non-linear reinforcing structure may be in communication with the first and second fixed net layers and may be configured to share with the first and second fixed net layers a load applied to the load bearing structure.

Abstract: Disclosed is an exterior finish system for building structures that includes a water pervious adhesive for securing an insulation layer to a water resistive barrier applied to a building wall substrate. Also disclosed is a building structure such as a building column or wall that includes the finish system and a method of using the finish system to assemble a building structure such as column or wall.

Abstract: A vapor barrier for mounting and sealing on a foundation wall using adhesive. The vapor barrier includes a moisture impervious sheet having a first exterior side surface arranged to extend adjacent to and downward along the foundation wall when mounted. An adhesion strip is secured to the first exterior side surface being adapted to absorb an adhesive placed on the foundation wall for securing the moisture impervious sheet to the foundation wall. The adhesion strip comprising a porous synthetic fibrous web capable of distributing the adhesive completely through the adhesion strip to the first exterior side surface of the moisture impervious sheet during mounting to the foundation wall so that an air and moisture tight seal is formed between the foundation wall, the adhesion strip, and the moisture impervious sheet.

Abstract: Disclosed is a waterproofing membrane that bonds to concrete cast against it (i.e., post-cast concrete). The membrane includes a flexible carrier sheet, a pressure sensitive adhesive, and reflective particles on the surface of the adhesive. The reflective particles should have an average diameter equal to or greater than the thickness of the pressure sensitive adhesive. Preferably, the reflective particles are ground white cement or ground white hydrated cement. The membrane does not have a removable release sheet that is typically used to prevent the adhesive portion of the membrane from adhering to the carrier sheet or other portion of the membrane when the membrane is rolled up.

Abstract: A support plate for a slab-lined wall, ceiling, or floor construction for achieving decoupling between a ground and a surface lining to be affixed to the support plate. The support plate comprises a foil-like plate made of plastic material and provided with a plurality of chambers constituted by recesses with respect to a plane of the foil-like plate, outer end faces which form a first plate side and on an opposite side a second plate side, the recesses being configured for receiving a hardening contact means for providing a contact layer for the surface lining to be applied, a woven or non-woven fabric disposed on the first plate side, and an adhesion-strengthening layer made of a web-like material being applied to at least one of the first or second plate sides for lining at least the recesses of the chambers.

Abstract: A net layer (32) defines the shell (40) of a building, carried by any necessary supports. A hardening layer (34) is applied to fix the shape of the net layer (32) and to establish wall, roof, and floor. Optionally the shell is of sufficient strength to receive application of further layers in order to define an exoskeleton. Structures of roof sections include parallel-sided segments and converging-sided segments, with troughed or domed section shapes. Structures of walls include opposed shell sides (35), (78) and central filler layers (70), together defining an exoskeleton. Posts (72) can add additional structural capacities for supporting walls, roof and floor and can be formed integrally of net (32) and hardener (34).

Abstract: Represented and described is a sheet having at least one fastening section for the bonding of the sheet to a substrate or for bonding to a further sheet. In accordance with the invention the fastening section is coated partially with an adhesive and has at least two bonding regions formed by the adhesive coating, and adjacent bonding regions are separated from one another at least partly by at least one adhesive-free region of the fastening section.

Abstract: A series of parallel V-grooves are formed on the top surface of a new or existing top coat of lightweight insulating concrete of a roof deck. A slurry coat of formulated concrete is then applied to the top coat of lightweight insulating concrete at locations in between the parallel V-grooves, to repair cracks and holes and attach a base ply roof membrane, thereby eliminating the need for a base sheet and mechanical fasteners when installing a roof membrane system on the lightweight concrete deck of a roof structure. The formulated concrete slurry comprises a mixture of Portland cement (type I), cellulose, poly vinyl alcohol, and water. A base ply (modified or single ply) roof membrane having a sanded or fleece bottom side is set into a ¼ inch thick slurry coat of the formulated concrete to effectively attach the base ply roof membrane to the lightweight concrete deck.

Abstract: Disclosed is a waterproofing membrane that bonds to concrete cast against it (i.e., post-cast concrete). The membrane includes a flexible carrier sheet, a pressure sensitive adhesive and reflective particles on the surface of the adhesive. The reflective particles should have an average diameter equal to or greater than the thickness of the pressure sensitive adhesive. Preferably, the reflective particles are ground white cement, ground hydrated white cement, ground partially-hydrated white cement or a mixture of two or more of these. The membrane does not have a removable release sheet that is typically used to prevent the adhesive portion of the membrane from adhering to the carrier sheet or other portion of the membrane when the membrane is rolled up.

Abstract: A method of adhering a roofing membrane to a roof surface including providing a roofing membrane including a hygroscopic dusting agent on at least one planar surface of the membrane. A water-borne adhesive is applied to the at least one planar surface of the membrane or the roof surface and the roofing membrane is then mated to the roof surface while the adhesive retains a majority of its original water content.

Abstract: A single ply mechanically embossed roofing membrane in a roll form for use in commercial applications on flat and low pitched roofs. The roofing membrane preferably includes a scrim or reinforcement sheet sandwiched between a top layer and a bottom layer, wherein the bottom layer is completely embossed with various configurations forming alternating ridges and valleys. The embossed roofing membrane improves roll blocking upon installation. The embossed roofing membrane can be installed by fully adhering or mechanically attaching to the roof deck.

Abstract: Disclosed is a roofing system including an anchored seam, the system including a roof deck, roof assembly components disposed upwardly adjacent of the roof deck, a first waterproofing membrane disposed upwardly adjacent of the roof assembly components, a second waterproofing membrane, a portion of which being disposed upwardly adjacent of the first waterproofing membrane, the portion of the second waterproofing membrane overlapping a portion of the first waterproofing to create a seam region between the first waterproofing membrane and the second waterproofing membrane, a termination bar including a convexity away from the roof deck disposed upwardly adjacent of the second waterproofing membrane in the seam region, and a mechanical fastener extending through the termination bar, the fastener being long enough to extend from the termination bar, wherein the mechanical fastener and the termination bar anchor the seam region to the roof deck.

Abstract: A rigid component is formed of a plurality of coupled cylinders. Each cylinder has a circular cross sectional configuration with an axis, a top, a bottom, first and second sides and a slit. The coupled cylinders have parallel axes and include an upper plane with the axes in a common upper plane and a lower plane with the axes in a common lower plane. The slits face downwardly in the upper plane and upwardly in the lower plane. The slits receive a side of each of its adjacent cylinders. The cylinders are secured with respect to each other by the resilience of the cylinders at their slits holding the sides of the cylinders passing through the slits.

Abstract: A decking/flooring system includes a substrate, a layer of sealing material applied over and in contact with a surface of the substrate, a texture layer applied over and in contact with the sealing material layer, an adhesive layer applied over and in contact with the texture layer, and a finish layer. A method for installing the decking/flooring system is also described.

Abstract: A gunnable adhesive composition includes a silicone resin and an organopolysiloxane, or a reaction product thereof; as well as a filler and a solvent. The silicone resin and the organopolysiloxane are present in amounts to provide a resin/polymer ratio ranging from 58% to 64%. The gunnable adhesive composition may be applied to low surface energy substrates at ambient temperatures without primer or other surface treatment. The gunnable adhesive composition and adhesive product thereof are useful in weather barrier applications, such as building wraps.

Abstract: A metal building insulation system and method for by-pass wall girt metal building systems which facilitates the installation of wall insulation applied from the interior of the building for the full depth of the wall girt. Integrally faced vapor barrier blanket insulation combined with vapor barrier extensions installed behind perimeter structural and corner columns before wall girt erection are preferred system components.

Abstract: A water vapor barrier material for a building structure includes a base entangled net material and a composite nonwoven. The composite nonwoven includes a film layer with a nonwoven layer on each side of the film layer. The film layer has a water vapor transmission rate of less than 10.0 g-MIL/100-in2/day at a temperature of 100 degrees Fahrenheit and 90 percent relative humidity.

Abstract: Flood proofing of buildings built on a slab is provided. Water having a depth less than a selected distance H above the slab is excluded from the building by windows, doors and panels that are sealed to prevent water entry. The panels may be applied over a variety of existing veneer materials or may be used in new construction.

Abstract: A perimeter insulation strip for use when laying laminate or parquet floors is described. The perimeter insulation strips comprises a vapor barrier film including a perimeter insulation strip bonded on a front side and at least one adhesive layer arranged behind the perimeter insulation strip on a back side. The vapor barrier film has at least one overlapping section starting from the perimeter insulation strip to connect with a vapor barrier film below a floor covering to be laid.

Abstract: A metallic T-joint patch is provided for application to intersecting and overlapping portions of a single ply membrane system of different heights. When applied to the joint formed by the intersecting and overlapping membranes, the metallic joint patch having an adhesive layer conforms to the void formed by the joint and assures a water tight seal. A method of making a metallic joint patch and a method of applying a metallic joint patch to a void formed by intersecting and overlapping membranes are also disclosed.

Abstract: Disclosed herein is a hail resistant roof system having a roof deck. An insulation layer is supported by the roof deck. An energy absorbing layer supported by the insulation layer and a waterproof membrane loose laid over the energy absorbing layer. A wind blown debris resistant roof system is disclosed that includes a roof deck with a secondary waterproof membrane disposed over the deck. A layer of stiff material is attached to the roof deck and a primary waterproofing membrane is supported by the stiff material. Further, a roof insulation and waterproofing construction upwardly adjacent the waterproofing membrane. Also disclosed herein is a hail resistant roof system. The system includes a roof deck with a secondary waterproofing membrane. An insulation layer is supported by the roof deck. An energy absorbing layer is supported by the insulation layer and a primary waterproof membrane is loose laid over the energy absorbing layer.

Abstract: A method and system for constructing a concrete waterstop joint between first and second concrete portions. The method may include applying a continuous longitudinal cementitious and reactive waterproofing grout strip to a joint area of the first concrete portion and then forming the second concrete portion over the grout strip. The system may include a first concrete portion having a joint area, a continuous cementitious and reactive waterproofing longitudinal grout strip connectable to the joint area, and a second concrete portion formable over the grout strip. There is also provided a use of a cementitious and reactive waterproofing grout strip in the construction of a concrete waterstop joint between first and second concrete portions.

Abstract: A net layer (32) defines the shell (40) of a building, carried by any necessary supports. A hardening layer (34) is applied to fix the shape of the net layer (32) and to establish wall, roof, and floor. Optionally the shell is of sufficient strength to receive application of further layers in order to define an exoskeleton. Structures of roof sections include parallel-sided segments and converging-sided segments, with troughed or domed section shapes. Structures of walls include opposed shell sides (35), (78) and central filler layers (70), together defining an exoskeleton. Posts (72) can add additional structural capacities for supporting walls, roof and floor and can be formed integrally of net (32) and hardener (34).

Abstract: An underlayment for supplementing one or more physical properties of wall, ceiling, and floor construction components is used to in a wall, ceiling, or floor assembly that may be fabricated on site. The assembly includes: first and second wall, ceiling, or floor construction components which each have physical properties and an underlayment component which has at least one supplemental physical property for supplementing the physical properties of the first and second construction components. The construction components may or may not be secured together with the underlayment sandwiched between the second and first construction components to form a wall, ceiling, or floor assembly with the supplemental physical property or properties of the underlayment. The supplemental physical property or properties of the underlayment may include, but are not limited to, latent storage of thermal energy, sound transmission reduction, and/or burn through resistance.

Abstract: Plate-shaped cover material comprising an elastomeric layer and a plastically deformable metal mesh or metal plate, the elastomeric layer consisting of a glue or joint sealant cured to an elastomer and having strong adhesion to the metal mesh or the metal plate.

Abstract: Systems and methods for coupling a polymeric membrane to a structure are described herein. In some instances, the systems and methods for coupling polymeric membranes to structures is applicable to mounting structures onto polymeric membranes forming part of roofing structure. Particularly, the methods and systems described herein may be applicable to securing external structures, such as photovoltaic cells to a polymeric membrane, such as a thermoplastic membrane.

Abstract: There is disclosed a method of adhering a flexible solar panel to a PVC-based roofing membrane that interposes a certain plasticizer-containing PVC membrane between the solar panel and the roofing membrane.

Abstract: A spacer accessory including: a shank extending in an axial direction, one end of which includes a mechanism for securing the shank to a structural element of the wall that is to be lined and the other end of which includes a mechanism assembling the shank with lining studwork; two claws surrounding the shank; and a mechanism locking the two claws against one another with axial clamping.

Abstract: A studded plate (1) of layer (2) of a polymeric material where an adhesive material (3,4) in the form of a woven or non-woven material is attached on each side of the layer (2).

Abstract: A perimeter insulation strip for use when laying laminate or parquet floors is described. The perimeter insulation strips comprises a vapor barrier film including a perimeter insulation strip bonded on a front side and at least one adhesive layer arranged behind the perimeter insulation strip on a back side. The vapor barrier film has at least one overlapping section starting from the perimeter insulation strip to connect with a vapor barrier film below a floor covering to be laid.

Abstract: The present invention provides a device and method to maintain the integrity of a vapor barrier for use with concrete slab on grade construction. In accordance with the present invention an apparatus to repair a punctured concrete slab vapor barrier includes a substantially planar concrete slab vapor barrier patch having a resealable aperture to receive a removable, substantially upright support. The patch is secured to the existing vapor barrier and the concrete is poured and substantially set. The support is removed and the malleable concrete flows, causing the engagement of the resealable aperture, thereby repairing the punctured vapor barrier.

Abstract: A slurry coat of formulated concrete is applied to a new or existing top coat of lightweight insulating concrete to repair cracks and holes and attach a base ply roof membrane, thereby eliminating the need for a base sheet and mechanical fasteners when installing a roof membrane system on the lightweight concrete deck of a roof structure. The formulated concrete slurry comprises a mixture of Portland cement (type I), cellulose, poly vinyl alcohol, and water. A base ply (modified or single ply) roof membrane having a sanded or fleece bottom side is set into a ¼ inch thick slurry coat of the formulated concrete to effectively attach the base ply roof membrane to the lightweight concrete deck.

Abstract: A method of strengthening a roof is disclosed. Preferably, the roof is first cleaned of at least some of any existing roofing materials to expose at least a portion of a roof deck, which is also preferably cleaned. A layer of high viscosity resin may then be rolled or brushed onto the roof deck. Once the roof has been adequately prepared, a plurality of strips of composite material may be provided and saturated with a low-viscosity saturating resin. Each such saturated strip is preferably long enough to fit along an entire first side of the roof, the first such strip hanging partially over the first side of the roof. Each end of the first strip also overhangs the roof. A second saturated strip is then placed generally parallel to and overlapping the first strip. The ends of this second strip likewise overhang two sides of the roof.