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Need a quote? Call 069 77978

PHS Astra Control Membrane 1.5 X 50M Airtightness

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A vapor control layer with a fixed sd (specific diffusion resistance) of 10 is typically used in building construction to prevent moisture from penetrating walls or roofs. Here are some potential benefits and features of such a product:



Benefits:

  1. Moisture control: A vapor control layer with a fixed sd of 10 helps to prevent moisture from entering walls or roofs, which can lead to mold, rot, and other forms of water damage.
  2. Energy efficiency: By preventing moisture from entering walls or roofs, a vapor control layer can help to maintain the insulation’s effectiveness and reduce energy loss.
  3. Improved indoor air quality: By preventing moisture from entering walls or roofs, a vapor control layer can help to prevent the growth of mold and mildew, which can negatively impact indoor air quality and trigger allergies or respiratory problems.

Why Choose Us

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Built for Irish Weather

Our roof windows are designed to handle heavy rain, wind, and fluctuating temperatures — keeping your home warm, dry, and comfortable all year round.

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Maximum Light, Minimum Heat Loss

Thanks to advanced glazing and thermal insulation, our windows flood your space with natural light without compromising on energy efficiency.

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Easy Installation & Low Maintenance

We offer user-friendly designs that fit seamlessly into new builds or renovations, with long-lasting materials that require minimal upkeep.

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Stylish & Functional Design

Modern frames and slim profiles offer a sleek look inside and out — ideal for attic conversions, extensions, and contemporary homes.

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Trusted Brands, Expert Support

We supply only reputable, high-quality roof window brands. Not sure which model suits your project? Our team is here to guide you and offer a free custom quote.

Feature Icon

Built for Irish Weather

Our roof windows are designed to handle heavy rain, wind, and fluctuating temperatures — keeping your home warm, dry, and comfortable all year round.

Feature Icon

Maximum Light, Minimum Heat Loss

Thanks to advanced glazing and thermal insulation, our windows flood your space with natural light without compromising on energy efficiency.

Feature Icon

Easy Installation & Low Maintenance

We offer user-friendly designs that fit seamlessly into new builds or renovations, with long-lasting materials that require minimal upkeep.

Feature Icon

Stylish & Functional Design

Modern frames and slim profiles offer a sleek look inside and out — ideal for attic conversions, extensions, and contemporary homes.

Feature Icon

Trusted Brands, Expert Support

We supply only reputable, high-quality roof window brands. Not sure which model suits your project? Our team is here to guide you and offer a free custom quote.

What our Customer Says

Super friendly and really efficient with competitive prices across all their ranges

Sean

Very prompt, polite and helpful, Especially the guys out in the yard. Thanks!

Jon

Bought a patio set just before Easter and couldn’t be happier with it and the service received. Caroline, in particular, was so helpful and efficient....such a high standard of customer service. Highly recommend General Hardware for range, price and customer service.

Louise

I think I spend more time here than my own home! So handy, they have everything I need for my home refurb works and the best staff I've ever had the pleasure of dealing with!!

Jenny

Very helpful staff especially the young lady on work experience. She helped me with different requests.

Olive

Really well informed staff. Competitive prices. Will definitely go back there.

Claire

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