General DIY

30 Jul 2026

Softwood Timber Sizes Explained: 3×2, 4×2, CLS & What They’re For

In the UK, ‘4×2 timber’ means nominal 4×2 inch (roughly 100×50mm) softwood, though planed/CLS 4×2 finishes at about 89×38mm. ‘3×2’ is nominal 75×50mm (CLS ~63×38mm). CLS is planed with rounded edges for stud walls; C16 and C24 are strength grades for structural joists and rafters.

30 Jul 2026

Insulating a Garden Room, Shed or Van: The Breathable + Foil Approach

To insulate a garden room, shed or van, fit a breathable membrane on the cold outer side, add bulk or foil insulation in the frame, then seal a vapour control layer (foil membrane) on the warm inner side with taped joints. This 'breathable outside, sealed inside' order prevents interstitial condensation.

29 Jul 2026

Damp Proof Membrane (DPM) Guide: 1200g, Sheet vs Liquid & How to Install

A damp proof membrane (DPM) is a polythene sheet — commonly 1200 gauge (300 micron) — laid under or over a concrete floor slab to stop ground moisture rising into the building. It's lapped at joints, sealed with tape and linked to the wall DPC to form a continuous barrier.

27 Jul 2026

Does Foil Insulation Actually Work? Foil vs Fibreglass vs PIR

Reflective foil insulation works by reflecting radiant heat rather than trapping air, so it performs best with an adjacent air gap and in reducing summer heat gain and radiant loss. For high U-value targets it's usually combined with, not a replacement for, bulk insulation like mineral wool or PIR.

26 Jul 2026

What Is a Vapour Control Layer (VCL)? The Complete UK Guide

A vapour control layer (VCL) is a membrane fitted on the warm side of insulation to stop moist indoor air passing into the structure, where it would condense and cause damp, mould and rot. In UK homes it's typically an aluminium foil membrane installed behind plasterboard on walls and ceilings.

22 Dec 2025

The Ultimate Guide to Vapour Control Layers

Building or renovating a home in the UK is like dressing for the British weather. You need layers that keep the heat in, but you also need to manage how the building "breathes." If you’ve been researching insulation, you’ve likely come across the term Vapour Control Layer (VCL)

22 Dec 2025

Insulating a Garden Room or Shed So It’s Comfortable All Year

Most garden sheds are cold in winter and stifling in summer. That is usually not because they are badly built. It is because they were never insulated properly in the first place.

19 Oct 2025

The Roofing Guide: Dry Ridge Systems for UK Roofers

If you’re a roofer, standing still means losing ground. You’ve got to stay sharp with materials and methods - not just to win jobs, but to stay legal and respected. One of the biggest shifts in our trade has been dropping the old sand-and-cement ridge bed for dry-fix systems. The dry ridge is now standard in most new builds and re-roofs across the UK, and it’s becoming the only acceptable approach under British Standards.

19 Oct 2025

A Guide to Acoustic Insulation: How to Soundproof Walls & Floors

Noise problems in buildings are more common than many think. Even a well-built roof or wall can let sound travel through gaps, structural paths, or vibration. If you’re working on roofs, extensions, conversions or interiors, incoming or shared noise complaints often come your way. This guide brings together technical insight and trade practice - so you can spec systems with confidence, understand the rules, and deliver results that satisfy both client and Building Control.

19 Oct 2025

Loft Insulation and Part L: What Roofers Need to Know

If you’ve been roofing in the UK for a while, you will have noticed how often the regulations seem to change. Part L is the one that affects us most, as it deals with energy efficiency. Every time you put your hands on a roof, whether it’s a re-roof, a new build or a loft conversion, you are working with Part L.