Powerlon UltraBlock 200 is a high-performance vapour control layer (VCL) designed to improve energy efficiency and airtightness in building envelopes. Supplied in a convenient 1.6m x 50m roll, this thermo-reflective membrane acts as an impermeable air barrier, reflecting heat back into the building to reduce energy loss.
Powerlon UltraBlock 200 membrane is reinforced with a durable reinforcement scrim, offering superior strength and long-term performance. It is ideal for use in roofs and walls, installed on the warm side of the insulation to combat interstitial condensation and improve thermal performance.
Fully CE-marked, the Powerlon UltraBlock 200 is a reinforced vapour barrier that is easy to install. It’s suitable for both new builds and retrofit projects, forming an essential part of a high-performance insulation system.
Key Features:
- Thermo-reflective, reflective surface for reflecting heat back into the building
- Acts as a AVCL, improving airtightness and reducing interstitial condensation
- Impermeable air barrier to control moisture and air movement
- Suitable for roofs and walls
- Reinforced with scrim for added durability
- Ideal for use within the building envelope
Installation Guidelines – Powerlon® UltraBlock
- Continuity: Ensure Powerlon® UltraBlock membranes are installed continuously across the entire structure. Minimise joints wherever possible.
- Sealing Joints: All laps and joints must be sealed using Powerbond® FR Aluminium Tape. For superior performance, apply a continuous double row of Powerbond® Butyl Tape, spaced 75?mm apart, before sealing with the aluminium tape.
- Cold Roofs: When used in cold roof applications with the membrane draped between purlins and insulation above, sealing laps can be more difficult. In high-risk areas, install a rigid lining sheet throughout to support the membrane.
- Warm Roofs: In warm roofs where the membrane is supported directly by the structural deck, sealing is easier. The sealing tapes accommodate slight expansion or contraction in the deck.
- Penetrations & Airtightness: Keep service penetrations (e.g. soil pipes, vents, rooflights) to a minimum. Ensure airtight seals at every point of entry and along the roof perimeter.
- Laying the Membrane: Lay Powerlon® UltraBlock loosely, flat, and free from folds or wrinkles. Avoid creases that can compromise performance.
- Temperature & Weather Conditions: Do not install at temperatures below 5°C, as the membrane becomes less flexible. Avoid installation in windy conditions, which can make handling difficult.
- Fixings & Support: Timber frame fixings must not puncture the membrane. Only make joins where the membrane is fully supported.
- Joining Technique: Press all sealed overlaps firmly using a hand-held pressure roller. Tapes should only be applied in temperatures above 5°C.
- Inspection & Repairs: Before covering, inspect the membrane thoroughly to ensure all seals are intact. Any damage must be repaired using a patch of Powerlon® UltraBlock, fixed with a double row of Powerbond® Butyl Tape, 75?mm apart. Patches should not extend more than 150?mm beyond the damaged area.
- UV Protection: The membrane must be protected from UV exposure. Complete construction and cover the VCL within 3 months of installation.
Overlap Requirements
- Horizontal overlaps: Minimum 150 mm
- Vertical overlaps: Minimum 150 mm
Please refer to the full installation manual for detailed instructions and best practices.
- Powerlon Ultra block 200 is a thermo-reflective air and vapour control layer
- CE certified, Suitable for all builds.
- Reinforcement scrim provides sufficient strength for wall and ceiling applications
- Increases energy efficiency by reflecting heat back into the build
- Impermeable air and vapour barrier improves air-tightness
| Product Type | Air And Vapour Control Layer |
| Brand | ITP Ltd |
| Code | Ultrablock 200 |
| Length | 50M |
| Width / Coverage | 1.6M (80 sqm) |
| Sd | =<0.15 |
| Water Vapour Resistance | >630 MNs/g BS 3177 |
| Colour | Clear/ Siver |
| Temperature Range | -40°C - + 70°C |
| Thermal Reflectivity | 0.64 |
| Weight | 110 gsm |
| Order value | Delivery Charges (EX.VAT) | ||
|---|---|---|---|
| Up to £493 |
£30.00 |
||
|
£493.01 - £740 |
£20 | ||
| Over £741 | £15 | ||
Returns/Refunds And Cancellations:
You can cancel your order and get a full refund anytime before we confirm your order via email.
Once shipped, orders cannot be cancelled. You can however retun the itms to us within 10 days after delivery. 25% restocking fee with will applicable. Buyer pays postage for returns
Customers are requested to check the item on recipt and inform us of any damage immediately, via call/email. Photo evidence is must
For more information on returns and deliveries, please refer to our delivery information page.
