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Novia Polybit A1F Building Paper 1m x 25m ǀ 25m2

Novia Polybit Building Paper Polythene Coated A1F
Novia Polybit A1F Building Paper 1m x 25m ǀ 25m2
  • Moisture barrier - Underlays on uninsulated cladding
  • Temporary protection - Separation layers
  • Bond breaks - Draught and damp exclusion barriers
  • Traditional, polythene coated, reinforced, bitumen-bonded, building paper laminate
  • Clear polythene coated version of the standard BS 1521 class A1F building paper
Estimated delivery:
In Stock
£ 92.53
Ex VAT: £ 77.11
  • Brand: Novia®
  • Model: Polybit Building Paper 25m2
  • Dimensions: 25,000mm x 1,000mm x 0.01mm
  • SKU: Polybit A1F
  • Product code: P1-1217
  • MPN: Novia Polybit A1F Building Paper 25m2

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Novia Polybit Building Paper is a standard, polythene coated, reinforced, bitumen-bonded, building paper laminate used within the construction industry for temporary protection, separation layers, bond breaks and as a moisture barrier.

Its clear polythene coated version of the standard BS 1521 class A1F building paper.

Typically used where conditions require a material with additional strength and high-durability.

Manufactured with wet-strength kraft paper and meets the technical requirements of BS 1521, Class A1F for waterproof building papers.

Novia Polybit polymer-reinforcing scrim comes in 25m2 rolls.


Example application:

Moisture barrier.

Underlays on uninsulated cladding.

Temporary protection.

Separation layers.

Bond breaks.

Draught and damp exclusion barriers.



BS 1521, Class A1F

Weight (minimum): 6.5 kg

Colour: Brown

Moisture vapour resistance: 53 MNs/g minimum.

Tensile strength: 12.4 kN/m (M/D), 7.20 kN/m (C/D) minimum to BS 4415, dry

Bursting strength: 550 kN/m² minimum to BS 3137, dry

Minimum liquid water resistance: 24 hours

Upper temperature stability: Over 70°C

Resistant to chemicals found in plaster and cement



Novia Double Sided Butyl Tape

Novia Metallised BOPP tape


*Further information may be found in our Downloads section.

Fairly easy access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet 

Board covarage 25.00 m2
Colour Light Brown
Length 25m
Material PE-coated reinforced building paper
Weight 6.52 kg
Width 1000mm
Shipping method Courier
ETA Notification Yes
Features BS 1521 ǀ Class A1F
Manufacturer Novia®

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We deliver insulation materials to Mainland UK only. Deliveries to Highlands, Northern Ireland, Isle of Wight etc.. might be possible at additional cost.
We offer free delivery on most of the orders above £300 (excluding VAT) (except special products - shipping cost via courier - products marked ''Request A Quote'')

Delivery of some insulation materials might be extended due to the current situation (Covid-19, stock shortages, allocations).
If you need materials quickly please contact us - we will do our best to help you source materials needed.

We do not deliver on weekends and bank holidays. Sometimes we can deliver on Saturdays - please check with us before placing the order.
If you need any further information please contact us tel. 02081910776

We can help to calculate price per m2 or linear meter (one meter in length) cost, please just contact us via phone 02081910776, email or live chat. Alternatively, you can work it out yourself quickly and easily: to get cost per meter square please divide price shown in orange area by ''Required area (m2)'' Example price of £28.80 divided by board coverage 2.88m2 = cost of £10.00 per m2.


No matter whether you choose a local installer or a national company, there’s a few tips to help you find the right installer for your home insulation improvements, such as asking for recommendations and making sure that they’re part of a certification scheme. This makes sure that they have the right skills and standards of workmanship to carry out the installation, and you can be sure that they know exactly what they are doing.


1. Thermal inspection picture in portfolio

It’s worth seeing a installer’s previous work. There’s no harm asking if you can see any properties nearby that they’ve installed insulation in. Best way would be to see Infrared Thermal Imaging Inspections. Thermal cameras spot small, but key changes in temperature in different areas of a house, identifying problematic areas that the human eye never could and some that a visual inspection could only hypothesize.

2. Reviews

Along with checking recommendations and previous work, finding reviews online can often be a great way to find out if they provide a good service or not. However, it’s best not to solely rely on reviews you may find or review websites, as there’s no controlling who writes them.

3. Compare prices

Comparing prices will also ensure companies can’t take advantage of you and give you a fair price. 

4. Word of Mouth

The best way to find a great insulation installer is through recommendations. Make sure you ask friends and family. They will most likely give you their honest opinion and can tell you from first hand experience.


Whether you require a wall, cladding, external wall, loft or floor insulation fitted, you can find and hire your local insulation installers from popular UK web pages. A simple internet search will return thousands of potential installers near your area.



We are the stockist of construction materials and related products for both trade and DIY from most recognizable brands in the UK like Cordek, RCM, Promat, Rockwool, Isover, Celotex, Xtratherm, Ursa, Low-E, Cedral, Kingspan, Dufaylite, British Gypsum, K-rend, Ecotherm, Iko enertherm, Kay-Metzeler, Terrawool to allow you to complete your insulation job on time at competitive prices and the highest standards.


Whether you are a large company or a DIYer, if you need a large amount of insulation materials, we can offer quantity discounts at the best prices. Please contact us and our friendly customer service will try to find the best and cheapest solutions for you. We value your time and we will try to deliver the products as soon as possible at a reasonable price to your construction site or house. The UK's leading insulation supplier near you and your needs. Price List available upon request.
Novia Polybit Building Paper Polythene Coated A1F
Novia Polybit A1F Building Paper 1m x 25m ǀ 25m2
£ 92.53