Guides

Cavity walls have been a go-to for properties since the 1930s. Almost all homes have them and unless the property was built within...

19th March 2026

Insulation boards by Celotex can be installed in pitched roofs, flat roofs and solid masonry walls to name a few options. The good...

20th March 2026

DIY Difficulty Level 5

Loft ladders and hatches offer convenient access to elevated storage areas, such as attics or lofts, helping you make the most of ...

20th March 2026

DIY Difficulty Level 4

*Please note the Green Homes Grant Scheme is now closed, and the details below are for informational purposes only. Did you kno...

20th March 2026

DIY Difficulty Level 3

The world demand grows for thin, easy-to-fit and high-performing insulation, and Celotex is a market-leading manufacturer of insul...

19th March 2026

Plasterboard is an inexpensive and versatile construction material used for wall partitions, wall linings, ceilings, roofs and flo...

19th March 2026

Flat roof insulation maximises a building’s energy efficiency and minimises heat loss. A roof is typically classed ‘flat’ if...

19th March 2026

Soundproofing walls is a fantastic way to minimise sound transfer through your internal walls as well as the external walls in you...

29th February 2024

DIY Difficulty Level 3

Whatever type of property you’re working on, it’s important to think about how you’re going to keep it warm all year round...

19th March 2026

According to recent research, 73% of global consumers have considered changing their consumption habits to reduce their impact on ...

14th February 2024

Solid wall insulation is a layer of insulating material found on either the inside or outside of your home. Installing solid wall ...

19th March 2026

External wall insulation is a great way to reduce heat loss and improve the building envelope. Builders generally constructed buil...

20th March 2026

DIY Difficulty Level 5

Insulating a flat roof is a task that should be carried out during the construction phase. Retrofitting flat roof insulation is a ...

20th March 2026

DIY Difficulty Level 5

Passive House is a rigorous, voluntary house-building standard that focuses on energy efficiency and reducing the energy needed to...

20th March 2026

DIY Difficulty Level 5

U-value is the widely preferred unit in the UK that tells specifiers, builders, architects and engineers how good a material is at...

19th March 2026

R-value insulation refers to a material's ability to resist the flow of heat. The higher the R-value, the better of an insulating ...

19th March 2026

Cavity closers are an essential part of any cavity wall. A cavity closer's main benefits are to prevent heat from being lost throu...

19th March 2026

Celotex is the market leader in the PIR insulation board industry, having manufactured and supplied PIR boards for over 90 years. ...

19th March 2026

When installing a balcony, insulation is often overlooked or forgotten, despite its importance. When balconies or terraces are ins...

20th March 2026

DIY Difficulty Level 5

Insulating a home can be done in many ways. The first step is to decide which method of insulation suits your home the best. It’...

20th March 2026

DIY Difficulty Level 2

Rendering a wall provides a protective barrier against weather elements such as rain, wind and sunlight, which helps to prevent mo...

20th March 2026

DIY Difficulty Level 3

When renovating an existing building or constructing a new build with a timber framework, timber frame breather membranes are incr...

6th March 2024

DIY Difficulty Level 4

Plasterboard is a useful material for both DIY jobs and large-scale projects. But for the DIY user knowing how to cut plasterbo...

27th March 2025

DIY Difficulty Level 3

Plasterboard is commonly used in construction for creating interior walls and ceilings due to its ease of installation and versati...

27th March 2025

DIY Difficulty Level 2

What is screed? Screed is a mixture of sand and cement used in a wide range of applications within the construction industry. Esse...

28th April 2025

DIY Difficulty Level 4