House Wraps
ITP’s house wrap membranes are engineered to enhance the longevity and energy performance of a building.
A house wrap protects a building from rain, moisture and air infiltration while allowing water vapour to escape. Installed beneath the exterior layer, it acts as a weather-resistant barrier, preventing wind-driven rain and outside moisture from penetrating the walls. With decades of experience in manufacturing advanced building membranes, ITP has developed house wraps that maximise protection against external and internal moisture while enhancing energy efficiency and thermal performance.
ITP’s in-house printing facilities allow customisation including repeat logos and bespoke colours to match your brand’s image. Our products are independently tested to meet all relevant building regulations, with durable and reliable performance for a wide range of building types.
Enquire View Range
Our range of House Wraps
SupaPerm SP100
House Wrap
Our SupaPerm (SP100) house wrap is a single-layer non-woven fabric which is both water resistant and breathable. Ideal for walls in timber frame structures, wall applications and profiled metal roofs. SP100 provides breathable protection. This means that if it rains or any moisture gets behind the façade, brickwork or panels, the membrane protects the insulation from water ingress. The SP100 house wrap is water resistant while allowing the structure to breathe, enabling the escape of vapour from the insulation layer to prevent moisture damage. The rolls are available in 3 sizes: 1.6m x 100m, 2.7m x 100m, and 3.2m x 100m.
ThermaPerm
Thermo-Reflective House Wrap
This premium quality breather membrane has a layer of non-woven fabric which is breathable and water resistant. It also has a thermo-reflective foil layer which has the effect of increasing the thermal efficiency of the building, keeping the build cooler in the summer and holding heat in in the cooler months. Like our SupaPerm SP100 house wrap, ThermaPerm is used within timber frame and wall applications to create a breathable protection layer. This means that if any rain or moisture enters the building, the membrane protects the insulation from water ingress. The product is suitable for use in all wall and roof insulations. With enhanced W1-rated water tightness, its durable design also protects external walls during the construction process.
What functions do house wraps provide?
A house wrap is fitted beneath the façade of a building to enhance its weather resistance while allowing for adequate ventilation, ensuring optimal protection and extending the building’s lifespan. Its primary role is to act as a barrier against water ingress, wind, and moisture, while also permitting water vapour to escape from within the wall structure. This dual function is essential for maintaining the structural integrity and energy efficiency of a building.
By keeping water out, a house wrap helps prevent problems like timber decay, mould growth, and the degradation of insulation. At the same time, its breathable nature allows water vapour generated indoors to pass through the wrap and dissipate, reducing the risk of condensation and damp which cause mould, rot, and other moisture-related damage.
In addition, house wrap improves a building’s energy efficiency by reducing draughts and helping to maintain consistent indoor temperatures. It works alongside insulation to minimise heat loss in winter and heat gain in summer.
Building Regulations and guidelines for house wraps
In the UK, house wraps must adhere to regulations like Approved Document C, which focuses on moisture control, and Approved Document L, addressing energy efficiency. These regulations require house wraps to be breathable to manage condensation while providing effective resistance to external moisture and air infiltration.
For installation, house wraps should be applied continuously around the building envelope, overlapping joints by a recommended minimum (usually 100mm) and sealing edges with approved tape to create an airtight barrier. It is essential to position the wrap on the external side of insulation and attach it securely to the frame or sheathing with appropriate fixings. Care must be taken to prevent tears or gaps, and any damages should be repaired immediately to maintain effectiveness.
In partially open cladding systems, UV-resistant wraps are required to withstand prolonged exposure to sunlight. Proper installation of house wraps not only meets regulatory requirements but also ensures long-term protection, energy efficiency, and durability for the building.
Related products
FlameOut Block Class A vapour control layer
The FlameOut Block Class A vapour control layer is glass-based woven scrim and an aluminium layer with a special protection coating to protect the aluminium layer from corrosion.
Read more
FlameOut Block Standard vapour control layer
FlameOut Block Standard is polyethylene-based vapour control layer with a mono-filament reinforcement scrim to provide excellent tensile strength in wall and roof insulations.
Read more
FlameOut Breathe
FlameOut Breathe is made from breathable, non-woven fabrics with superior self-extinguishing, flame-retardant properties. FlameOut Breathe FR is independently tested to EN 13501-1.
Read moreRelated projects
Get in touch
If you’re interested in one of our products, have questions about a product, project or anything else, just fill out this contact form and one of our team members will be in touch soon. Alternatively you can contact us by phone, email, or post, using the below information, you can also contact relevant team members directly using the below information.
- Phone: +44 (0)1347 825200
- Email: info@itpltd.com
- Stillington Road, Easingwold
- York YO61 3FA, UK