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Building Membranes and Protective Sheeting

Flame Retardant Temporary Protective Sheeting with Hard Hat

Temporary Protective Sheeting

Vapour Barriers

Vapour Barriers

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High quality Building Membranes and Protective Sheeting products

At Basetec, our Building Membrane and Protective Sheeting range covers two essential product types for construction professionals: Vapour Barrier Membranes and Protective Construction Sheeting.

What are Vapour Barrier Membranes?


A vapour barrier (or vapour retarder) is a sheet material—commonly polyethylene, foil-backed films, or bespoke polymer membranes—designed to resist moisture diffusion through walls, floors, ceilings, or roofs. They also help control interstitial condensation and protect structural integrity.

Why Do Vapour Barriers Matter?


Vapour barriers prevent moisture ingress that can lead to mould, rot, and poor thermal performance, and they maintain building envelope efficiency by managing air‑borne vapour. As a result, they reduce long-term structural repair costs and extend service life.

Typical Vapour Barrier Applications


Residential & Commercial Walls – installed beneath plasterboard or cladding to control damp.

Floors & Concrete Slabs – to guard against ground moisture.

Roofs & Attics – keeping condensation out of insulation layers.

What is Protective Construction Sheeting?


Unlike vapour membranes, protective sheeting membranes are heavy-duty polythene sheeting products used as temporary covering to protect surfaces, scaffolding, or site elements against dirt, paint, and damage during works.

Examples include flame-retardant sheeting that safeguards surfaces while meeting safety standards, and temporary protective sheeting used for floors, furniture, walls, and windows during renovation or painting.

Benefits of Protective Sheeting Products


Site Protection: Ideal for covering floors, joinery, counters, and doors.

Fire‑Safe Site Cover: Flame‑retardant variants ensure compliance in mixed‑use and commercial work areas.

Versatility: Easily cut, taped, or draped—quick to deploy and remove.

What building membrane and protective sheeting brands do we stock?


We stock and supply high-quality building membrane systems, including full vapour barrier systems from A. Proctor Group and Visqueen. We also stock specialist protective sheeting products from Visqueen and Toughsheet in a range of sizes and thicknesses, including flame retardant membranes.
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Frequently Asked Questions About Building Membranes and Protective Sheeting

Where should a vapour barrier be installed – inside or outside the insulation?

Typically placed on the warm side of insulation – interior in cold climates, exterior in hot/humid climates

What thickness/gauge is best for a vapour barrier?

Commonly 6 mil (≈150 µm) for general use; heavy-duty applications use 250–500 gauge (≈125–250 µm), and structural-grade may use 1000 gauge (≈500 µm+)

Can I DIY install a vapour barrier?

Yes—many homeowners and tradespeople install it themselves. Success depends on measuring accurately, ensuring overlap, and sealing seams properly.

What are common installation mistakes (seams, gaps, tape)?

Frequent errors include insufficient overlap (<150 mm), weak seam sealing, using poor-grade tape, and neglecting seam rollers

Can vapour barriers cause mould or trap moisture?

Yes—if improperly installed or used in the wrong climate, they can trap moisture behind walls or ceilings and promote mould growth.

What thickness should I choose for protective sheeting?

Choose by job type: light coverage uses 100–150 µm; heavy-duty surfaces or floors benefit from ≥150–200 µm thickness for puncture resistance.

Is protective polythene sheeting waterproof and UV‑resistant?

Yes—standard polythene is waterproof. For outdoor or long‑term use, opt for UV‑resistant (black) or flame‑retardant options

What are typical applications for protective sheeting?

Used during painting, concrete curing, dust containment, protecting finishes, covering scaffolding, and guarding against spills or debris.

Vapour barrier vs protective sheeting—what’s the difference and do I need both?

Vapour barriers manage moisture diffusion inside walls, floors, and roofs.

Protective sheeting safeguards surfaces during works from dust, paint, and damage.

Using both maintains structural moisture protection and surface integrity on site.

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