Educational

Cool roofs and Part L — where a solar-reflective roof fits UK building regulations

Cool Roofs and Part L: Where a Reflective Roof ...

Part L is about heat loss, not solar gain — so where does a solar-reflective roof actually help with compliance? A plain-English look at cool roofs, Part L and summer...

Cool Roofs and Part L: Where a Reflective Roof ...

Part L is about heat loss, not solar gain — so where does a solar-reflective roof actually help with compliance? A plain-English look at cool roofs, Part L and summer...

The GOAT Solar Retrofit — cooling an ageing bituminous roof

How to Cool an Ageing Bituminous Roof — Without...

Most flat roofs in Britain are bituminous, dark and older than they look. A waterborne, solar-reflective retrofit coating can go straight over a sound one — cooling it, protecting it,...

How to Cool an Ageing Bituminous Roof — Without...

Most flat roofs in Britain are bituminous, dark and older than they look. A waterborne, solar-reflective retrofit coating can go straight over a sound one — cooling it, protecting it,...

VCL for internal wall insulation — moisture-safe retrofit with Passive Purple liquid vapour control

VCL for Internal Wall Insulation: Getting Retro...

If you are fitting internal wall insulation (IWI) to a solid-walled UK home, a vapour control layer (VCL) on the warm side of the insulation is not optional — it...

VCL for Internal Wall Insulation: Getting Retro...

If you are fitting internal wall insulation (IWI) to a solid-walled UK home, a vapour control layer (VCL) on the warm side of the insulation is not optional — it...

Airtight and breathable — will airtight paint trap moisture, intelligent breathability explained

Will Airtight Paint Trap Moisture? Intelligent ...

No — airtight paint does not have to trap moisture, because airtight and vapour-closed are two different things. It is the most common objection we hear: “if you seal the...

Will Airtight Paint Trap Moisture? Intelligent ...

No — airtight paint does not have to trap moisture, because airtight and vapour-closed are two different things. It is the most common objection we hear: “if you seal the...

Passive Purple application FAQ — coverage, coats and drying times

Passive Purple Application FAQ: Coverage, Coats...

Passive Purple is applied in two coats by airless spray, roller or brush, over a suitably primed substrate, and can be plastered or rendered once the membrane has cured. Those...

Passive Purple Application FAQ: Coverage, Coats...

Passive Purple is applied in two coats by airless spray, roller or brush, over a suitably primed substrate, and can be plastered or rendered once the membrane has cured. Those...

Do I need a vapour barrier — liquid vapour control layer guide for UK homes

Do I Need a Vapour Barrier? A UK Guide

If you are adding insulation to a UK home — a loft conversion, a timber frame extension, a flat roof build-up or internal wall insulation — the short answer is...

Do I Need a Vapour Barrier? A UK Guide

If you are adding insulation to a UK home — a loft conversion, a timber frame extension, a flat roof build-up or internal wall insulation — the short answer is...