Thermally coated wall anchor and anchoring systems with in-cavity thermal breaks
Thermally-isolating wall anchors and anchoring systems employing the same are disclosed. A thermally-isolating coating is applied to the wall anchor, which is interconnected with a wire formative veneer tie. The thermally-isolating coating is selected from a distinct grouping of materials, that are applied using a specific variety of methods, in one or more layers and cured and cross-linked to provide high-strength adhesion. The thermally-coated wall anchors provide an in-cavity thermal break that severs the thermal threads running throughout the cavity wall structure, reducing the U- and K-values of the anchoring system by thermally-isolating the metal components.
1. A thermally-isolating sheetmetal wall anchor for use with an anchoring system in a wall having an inner wythe and an outer wythe, the inner wythe formed from a drywall backup wall mounted on metal studs or columns, the inner wythe and the outer wythe in a spaced apart relationship the one with the other forming a cavity therebetween, the wall anchor comprising:
an attachment portion substantially planar in form for surface mounting on the inner wythe;
a cavity portion contiguous with the attachment portion, the cavity portion having a receptor for interconnection with a veneer tie; and,
a thermally-isolating coating disposed on the receptor, the coating having low thermal conductivity and transmissivity, the coating forming a thermal break in the cavity;
wherein upon installation within the anchoring system in the cavity wall, the wall anchor restricts thermal transfer between the veneer tie and the wall anchor and between the wall anchor and the veneer tie.
2. The wall anchor according to claim 1 , wherein the thermally-isolating coating is one or more layers of a compound selected from the group consisting of thermoplastics, thermosets, natural fibers, rubbers, resins, asphalts, ethylene propylene diene monomers, and admixtures thereof.
3. The wall anchor according to claim 2 , wherein the selected compound is an isotropic polymer selected from the group consisting of acrylics, nylons, epoxies, silicones, polyesters, polyvinyl chlorides, and chlorosulfonated polyethelenes.
4. The wall anchor according to claim 2 , wherein the thermally-isolating coating is applied in layers including a prime coat; and wherein, upon curing, the outer layers of the thermally-isolating coating are cross-linked to the prime coat to provide high-strength adhesion to the wall anchor cavity portion.
5. The wall anchor according to claim 2 , wherein the thermally-isolating coating reduces the K-value of the wall anchor to a level not to exceed 1.0 W/m K.
6. The wall anchor according to claim 2 , wherein the thermally-isolating coating reduces the U-value of the wall anchor to a level not to exceed 0.35 W/m 2 K.
7. The wall anchor according to claim 2 , wherein the thermally-isolating coating is further applied to the attachment portion and the cavity portion.
8. A surface-mounted anchoring system for use in the construction of a wall having an inner wythe and an outer wythe, the inner wythe formed from a drywall backup wall mounted on metal studs or columns, the outer wythe formed from a plurality of successive courses with a bed joint, having a predetermined height, between each two adjacent courses, the inner wythe and the outer wythe in a spaced apart relationship the one with the other forming a cavity therebetween, the anchoring system comprising:
a wall anchor fixedly attached to the inner wythe constructed from a metal plate-like body, the wall anchor, in turn, comprising;
an attachment portion substantially planar in form for surface mounting on the inner wythe;
at least one cavity portion contiguous with the attachment portion, the cavity portion extending from the inner wythe and having a receptor portion, upon installation thereof, extending into the cavity and terminating therewithin;
a receiving aperture in the receptor portion, upon installation, disposed horizontally in the cavity; and,
a thermally-isolating coating disposed on the receiving aperture, the coating having low thermal conductivity transmissivity, the thermally-isolating coating having one or more layers of a compound selected from the group consisting of thermoplastics, thermosets, natural fibers, rubbers, resins, asphalts, ethylene propylene diene monomers, and admixtures thereof, the coating forming a thermal break in the cavity;
a wire formative veneer tie interlockingly connected within the receiving aperture and configured for embedment in the bed joint of the outer wythe to prevent disengagement from the anchoring system; and,
a pair of fasteners affixing the wall anchor to the inner wythe.
9. The anchoring system according to claim 8 , wherein the thermally-isolating coating reduces the K-value of the wall anchor to a level not to exceed 1.0 W/m K and the U-value to a level not to exceed 0.35 W/m 2 K.
10. The anchoring system according to claim 8 , wherein the thermally-isolating coating is further applied to the attachment portion and the cavity portion.
11. The anchoring system according to claim 8 , wherein the selected compound is an isotropic polymer selected from the group consisting of acrylics, nylons, epoxies, silicones, polyesters, polyvinyl chlorides, and chlorosulfonated polyethelenes.
12. The anchoring system according to claim 8 , wherein the thermally-isolating coating is applied in layers including a prime coat; and wherein, upon curing, the outer layers of the thermally-isolating coating are cross-linked to the prime coat to provide high-strength adhesion to the wall anchor.