The upside of using metal insulation fasteners is their dependability to continue to function in the event of a fire; the downside is that metal is a good conductor of heat and can provide a thermal bridge through the insulation, resulting in potential heat loss at fastening positions. PTFE washers are strong, durable, and have one of the lowest coefficient friction levels of any other solid material. They are also chemically resistant and non-conductive with excellent dielectric properties. Plus, PTFE is an excellent insulator and is FDA-approved. You don't have permission to access "http://www.homedepot.com/p/Plasti-Grip-1-75-in-ci-Prong-Washer-HDPGCIPRONG250/301792623" on this server. Insulation frequently forms the part of a buildings external-envelope which maximise its thermal performance; examples include external wall insulation (EWI) and over-rafter warm roofing systems. These systems need to be held securely to the structure to resist significant wind-loads and stop the insulation from being torn from the building. Failure of an external insulation system can occur if pull-out loads wrench the fixing system from the building or pull-through loads cause the insulation to fail and pull over the heads of the fastener. Establishing the suitability of a fastener to anchor into a specific building material is an essential part of planning an insulation fixing system.

Thermal insulating washers are found in nearly every industry, including aerospace, automotive, heating and cooling, plumbing, appliances, the list goes on. And thanks to its many unique characteristics, it’s also a popular choice for washers and spacers. Its texture allows other components and parts to glide over them easily and being thermal but remaining non-conductive, also makes them a popular choice for use in circuit boards. It is common for pragmatic designers to specify an insulation fastening system that combines the attributes of both plastic fixings and steel anchors. In external wall insulation systems for low-rise buildings, the designer may prescribe the use of the more thermally efficient plastic fasteners, supplemented by using fire-safe mechanical fixing per board. Select the Appropriate Type of Non-Combustible Mechanical Fixings Thermal insulating washers are made out of a material called PTFE. PTFE is a polytetrafluoroethylene (PTFE)-based synthetic fluoropolymer of tetrafluoroethylene, a high-molecular-weight compound consisting of carbon and fluorine — and is one of the most commonly used artificial substances in the world. The advantage of using plastic insulation fixings is that they help retain the insulation values of a building by mitigating potential heat loss at fastening positions. The disadvantage of using plastics and nylons is that they are combustible and are incompatible with an insulating system where fire-resistance is a constraint. Best Insulation Fasteners for Fire Performance

Fire-resistant insulation fixings are available in zinc plated carbon-steel and stainless-steel. When insulation needs fitting externally, consider the use of stainless steel, which offers excellent resistance to corrosion. When fixing insulation internally, and rust potential is not an issue, carbon-steel fasteners, which cost less, are generally suitable for use. The stainless steel Insofast ISF18 is a similar fixing that includes an 18mm head. It is perfect for fixing plywood or OSB faced insulation sheets to rafters in warm flat roof appli­cations. The ISF18 is also available in zinc-plated steel. Non-combustible fixings for fastening insulation to concrete soffits The use of such synthetic fasteners helps to fulfil the objective of retaining the utmost insulation values of a building by mitigating potential heat loss at fastening positions. Several fastening systems are set up such that upon installation, the head sits in a shallow recess, slightly beneath the surface of the insulating material.

The purpose of insulating a building is to maximise its thermal benefit. The majority of insulation-fastening plugs are of plastic or nylon composition and are poor conductors of heat. Buy Twistfix insulation fixings for fasteningfoam, polystyrene and mineral wool insulating products to buildings. In contrast, metal fixings maintain the stability of the boards in the event of a fire. Metal fixings comply with BS EN 13501 as a Class A1 non-combustible fastener. Class A1 fasteners will not contribute to a fire at in any stage nor will they present a smoke hazard. You don't have permission to access "http://www.homedepot.com/p/SPAX-1-3-4-in-Dia-Plasti-Grip-ci-Prong-Insulation-Washers-75-Count-5019677517509/308052360" on this server.