Building Materials & Insulation UK
Insulation, plasterboard and roofing materials for UK home renovation.
Read our Building Materials & Insulation buying guides →Loft & Wall Insulation
Insulation rolls, slabs and boards for lofts and walls.
Plasterboard & Plastering Supplies
Plasterboard sheets, plaster and jointing compound.
Roofing Materials
Roofing felt, tiles and repair materials.
Timber & Sheet Materials
Timber, plywood and MDF sheet materials.
Damp Proofing & Waterproofing
Damp-proof membranes and waterproofing treatments.
Draught Proofing & Weatherstripping
Draught excluders and weatherstripping for doors and windows.
Shop all Building Materials & Insulation (119)
Every product in Building Materials & Insulation, across all subcategories. Filter by subcategory or price tier — each filter combination has its own page you can bookmark or share directly.

#1 Pick
Knauf Loft Insulation Roll Roof Lagging 100 150 170 200mm Thick Attic and Floors (150mm, Cream)- Mineral Wool
- 150mm
£44.99
Pros
- Glass mineral wool rolls pre-perforated to fit common joist spacing
- Non-combustible with ECOSE bio-based binder for lower odour
- Effective for both loft and floor lagging in one product
Cons
- Itchy to handle without gloves and a mask like most mineral wool
#2 Pick
Knauf Loft Insulation Roll Floor Roof Lagging (3, 150mm)- Mineral Wool
- 150mm
£129.99
Pros
- Bulk 3-roll pack covers a full loft in fewer deliveries
- Mineral wool construction gives solid thermal and acoustic performance
- Works for both roof lagging and suspended floor insulation
Cons
- Kerbside delivery only on bulky multi-roll packs
#3 Pick
Knauf Loft Insulation Roll Floor Roof Lagging (4, 200mm)- Mineral Wool
- 200mm
£189.99
Pros
- 200mm thickness suits a top-up layer to reach current Building Regs U-values
- Non-combustible glass mineral wool with an R-value of 4.5 m2K/W
- 4-roll pack reduces the number of separate orders needed
Cons
- Bulkier rolls take up more van space to transport

#4 Pick
EARTHWOOL 3 x Insulation Loft Rolls Knauf 200mm Thickness, 6.84m2 Per Roll Combi Cut 20.52m2 Area Covered- Glass Mineral Wool
- 200mm
£64.99
Pros
- Combi-cut rolls are easier to handle in a loft than full-length rolls
- 20.52m2 total coverage suits an average loft top-up job
- Low-dust ECOSE technology binder is more pleasant to install
Cons
- Mainland UK kerbside delivery only, cannot ship to some postcodes
#5 Pick
SuperFOIL SF6 Multifoil Insulation 1.2m x 10m - Energy Saving DIY Multifoil Insulation Roll - 3-in-1 Sustainable Thermal Insulation Reflective Radiant Barrier & Vapour Barrier- Multifoil
- 1.2m x 10m
£84.99
Pros
- Thin multifoil roll saves space versus bulky mineral wool in tight lofts
- 3-in-1 design combines insulation, radiant barrier and vapour barrier
- Lightweight roll is easy for one person to install solo
Cons
- Needs an air gap either side to perform as rated, adding install complexity

#6 Pick
Loft Leg XL Flooring LoftLegs 300mm Insulation Spacer - 12 Pack- Insulation Spacer
- 300mm, 12 Pack
£23.99
Pros
- Raises loft boarding clear of insulation so it stays uncompressed for full thermal value
- Screws straight into joists with no cutting or extra fixings needed
- 300mm height suits a deep top-up layer without squashing it flat
Cons
- Needs the loft boards bought separately to complete the raised floor
#7 Pick
High Loft Itch Free Thermal Construction Insulation Roll (8m x 370mm x 110mm) 2.96 m²- Polyester Fibre
- 8m x 370mm x 110mm
£47.99
Pros
- Polyester fibre construction is itch-free to handle, unlike mineral wool
- Non-toxic and safe to install without a full respirator and gloves
- Suits lofts, walls, floors and van conversions from one roll
Cons
- Lower density than mineral wool, so needs care not to compress it when boarding over
#8 Pick
SuperFOIL Foil Insulation Roll 0.6m x 5m - Energy Saving DIY Bubble Foil Sheet - 3-in-1 Sustainable Thermal Insulation Reflective Radiant Barrier & Vapour Barrier- Reflective Foil
- 0.6m x 5m
£14.38
Pros
- Small 0.6m x 5m roll suits patching, sheds and smaller wall sections
- Reflective foil layer doubles as a radiant barrier and vapour barrier
- Thousands of verified reviews back up its reliability
Cons
- Small roll size means several are needed to cover a full loft
#9 Pick
Dripex Self Adhesive Aluminium Foil Insulation, Thermal Soundproof Cotton Layer, Heat Reflector & Radiant Barrier, Ideal for Roofs, Walls & Camper, 5mm, 1m x 10m- Foil-Faced Cotton
- 5mm, 1m x 10m
£42.47
Pros
- Self-adhesive backing speeds up fitting to roofs and walls
- Cotton wadding layer adds sound deadening as well as thermal insulation
- 10m² coverage per roll suits a full shed or small loft section
Cons
- Self-adhesive layer needs a clean, dry surface to bond properly
#10 Pick
Gyproc Plasterboard Sheets 2400mm x 1200mm x 12.5mm Square Edge Pack of 5 Boards- Gypsum Plasterboard
- 2400 x 1200 x 12.5mm
£89.99
Pros
- Standard 2400 x 1200mm sheet size fits most stud and ceiling layouts
- Square edge suits both taping and skim-coat finishing
- Pack of 5 covers a typical room without excessive offcuts
Cons
- Mainland UK deliveries only, cannot currently reach Scotland

#11 Pick
Toupret Joint, Skim & Fill Quick Dry - Crack Resistant, Easy Sand, Paintable Wall & Ceiling Filler - 10kg- Jointing Compound
- 10kg
£24.99
Pros
- One product handles jointing, skimming and filling in a single tub
- Quick-dry formula speeds up multi-coat plasterboard finishing
- Sands smooth and resists cracking on repaired joints
Cons
- Fast drying time leaves a shorter working window per mix

#12 Pick
Polycell Multi Purpose Polyfilla - Ready Mixed 1KG- Filler
- 1kg
£13.31
Pros
- Ready-mixed tub needs no prep, straight from the tub to the wall
- Spreads smoothly and adheres well to plaster, wood and masonry
- One of the best-reviewed general fillers on Amazon UK
Cons
- 1kg tub is used up quickly on larger crack or hole repairs

#13 Pick
Everbuild All Purpose Ready Mixed Filler – Interior And Exterior Use – Dries White – 330g Tube- Filler
- 330g
£5.10
Pros
- Squeeze tube makes small crack and hole repairs mess-free
- Rated for both interior and exterior plaster, brick and wood repairs
- Dries quickly and sands and paints over easily
Cons
- Small 330g tube is best for touch-ups, not larger jobs
#14 Pick
British Gypsum Thistle Multi Finish Plaster 25Kg Bag- Gypsum Plaster
- 25kg
£18.99
Pros
- Industry-standard trade finish plaster used by professional plasterers
- Smooth, inert surface ready for decoration once cured
- Good working time for beginners still learning to trowel
Cons
- Needs a reasonably fast, confident application before it goes off

#15 Pick
Proper Tools 11 PCS - DRYWALL TAPING, FILLING KNIFE, KNIVES, SCRAPER, PLASTERING SPATULA, SET- Stainless Steel
- 11-Piece Set
£18.99
Pros
- Stainless steel blades from 40mm to 600mm cover jointing through to full skims
- One set replaces buying separate taping, filling and scraping knives
- Amazon Choice pick with a strong review track record for the price
Cons
- Plastic handles feel less premium than trade-grade forged tools
#16 Pick
Black Polyester Shed Roofing Felt 32.8 x 3.2 ft (10m x 1m) - Heavy Duty Weatherproof Roof Felt Roll for Summerhouses, Sheds, Kennels, 15 Year Life Expectancy, Premium Roof Covering- Polyester Bitumen
£48.65
Pros
- Reinforced polyester base holds up better than basic mineral felt
- Mineral granule top surface resists UV fading and cracking
- 15-year life expectancy suits sheds, summerhouses and kennels
Cons
- Heavier polyester felt is stiffer and needs care in cold weather to lay flat

#17 Pick
Rose Roofing Black Heavy Duty Shed Roof Felt with 25 Year Life Expectancy 8m x 1m Roll- Mineral Felt
£34.99
Pros
- 25-year life expectancy is long for a mineral felt at this price
- Reinforced fibre base is more hard-wearing than basic economy felt
- Well-reviewed choice for shed, kennel and hutch roofs
Cons
- Nails and adhesive sold separately on this particular listing
#18 Pick
NOVECRAFTO Premium Torch-On Heavy Duty Roofing Felt - Durable Mineral Capsheet - SBS Modified Bitumen Membrane - 8m Roll, 1m Wide, Black- SBS Modified Bitumen
£64.99
Pros
- SBS modified bitumen capsheet is tougher than standard shed felt
- Torch-on application gives a fully bonded, seamless flat roof finish
- Mineral cap surface adds UV and weather resistance
Cons
- Torch-on fitting needs a gas torch and some roofing experience

#19 Pick
50m2 Trade Store Breathable Roofing Felt - Eurovent - Roof Underlay - Roof Membrane Breathable Membrane for Sheds + Beneath Tiles - Slated Pitched Roofs - BBA & CE Approved - 1m x 50m 115 GSM- Breathable Membrane
£42.99
Pros
- BBA and CE approved for use beneath tiles on pitched roofs
- Large 50m2 roll cuts down on joins and seams
- Breathable membrane reduces condensation risk in the roof space
Cons
- 1m width means more overlap and offcuts on wider roof spans

#20 Pick
ABS Breathable Membrane 100GSM Roofing Felt – 1m x 50m Roll | Roof Felt Underlay for Sheds, Slated & Pitched Roofs | Breathable Roofing Membrane for Use Beneath Tiles- Breathable Membrane
£38.99
Pros
- CE approved and CPR compliant for both homes and sheds
- One of the highest-rated breathable membranes on Amazon UK
- Suitable for both roofing and walling underlay applications
Cons
- Standard 100gsm grade is lighter duty than premium 120gsm options
#21 Pick
Galvanised Clout Nails 13mm (Approx. 185pcs, 200g Pack) Roofing Felt Tacks for Shed Roof - Heavy Duty Felt Nails for Securing Shed Roof Felt in a Handy Plastic Case- Galvanised Steel
- 13mm, 200g Pack
£4.99
Pros
- Wide heads grip roofing felt securely without tearing it
- Galvanised coating resists rust and corrosion in exposed outdoor use
- Reusable plastic case keeps loose nails organised and easy to carry
Cons
- 13mm length is best suited to felt and light board, not thicker timber
#22 Pick
Standard Grade Shed Roof Felt Black Mineral 16.4 x 3.2ft (5m x 1m) - Durable, Long-Lasting Heavy-Duty Roofing Felt, Weatherproof Roof Covering for Summerhouses, Sheds, Kennels- Mineral Felt
- 5m x 1m
£31.95
Pros
- Mineral-finished top layer gives good UV and weather resistance
- Compact 5m x 1m roll suits smaller sheds and summerhouse roofs
- Well reviewed with over 600 verified ratings
Cons
- Standard grade has a shorter life expectancy than polyester-reinforced felt
#23 Pick
MDF Board | 2440mm x 1220mm (8x4ft), 12mm Thick- MDF
- 2440 x 1220 x 12mm
£34.99
Pros
- Standard 8x4ft sheet size fits most sheet-material cutting lists
- Smooth, consistent surface takes paint and veneer well
- 12mm thickness suits shelving, furniture and general joinery
Cons
- Heavy sheet is awkward for one person to carry and cut alone
#24 Pick
Planed Square Edge (PSE) Pressure Treated Timber Batten - 100mm x 50mm 3.6m- Treated Softwood
- 100 x 50mm x 3.6m
£16.99
Pros
- Planed square edge gives a neater finish than rough sawn timber
- Pressure treatment protects against rot and decay outdoors
- Useful stock size for fencing, framing and garden building projects
Cons
- Limited stock of reviews so far despite the strong early ratings
Building Materials & Insulation – Your Guide to a Solid Foundation
This section of our site is dedicated to equipping you with everything needed to tackle your home improvement projects, from foundational groundwork to creating a comfortable and energy-efficient living space. We’ve brought together a comprehensive collection of materials that form the backbone of any successful build or renovation, focusing on products readily available through Amazon UK. Whether you're undertaking a small repair job, constructing an extension, or simply aiming to improve your home’s thermal performance, you’ll find the core components here – timber, concrete, insulation, and more. We understand that getting started can feel overwhelming; this guide will help you navigate the choices ahead and ensure you select materials suited to your specific needs and budget.
To make finding exactly what you need easier, we've broken down our selection into several key subcategories. You’ll discover detailed listings for Timber & Lumber – covering everything from pressure-treated decking boards and fencing posts to structural timber and softwood; Concrete & Cement – encompassing ready-mix concrete, cement bags, paving aggregates and mortars, crucial for foundations, paths, and patios; Insulation Materials – featuring a wide range of options including mineral wool, PIR foam, rockwool, and cotton batts designed to dramatically reduce heat loss and improve energy efficiency; and finally, Screws, Fixings & Fasteners. Within these broader categories, you’ll find even more specific items like drainage pipes, paving slabs, bricks, roofing materials, and specialist adhesives – all readily accessible via our links to Amazon UK.
When selecting building materials, a few key considerations will significantly impact your project's success and cost-effectiveness. Firstly, budget is paramount; material prices can vary dramatically, so establishing a realistic spending limit early on is crucial. Secondly, seasonality plays a role – demand for certain items, like timber, often spikes during the spring and summer months when renovation activity increases. Thirdly, don’t underestimate the importance of quality signals. Look for materials with relevant British Standards certifications (BS standards) or manufacturer guarantees, and consider the durability of the product based on its intended use. For example, exterior timbers should be pressure-treated, while insulation needs to meet specific thermal conductivity ratings.
To help you find precisely what you're searching for, simply click through to one of our subcategories. For instance, if you’re planning a new patio, navigate to the ‘Paving & Concrete’ section. If you need to insulate your loft space, explore the ‘Insulation Materials’ category. We've designed this site with clarity in mind; detailed product descriptions and customer reviews on Amazon UK will provide further information before you make your purchase.
FAQ
What materials are commonly used in building materials & insulation?+
You’ll find a range including timber (softwood and hardwood), brick, concrete blocks, plasterboard, various types of insulation like rockwool, PIR, and polystyrene, and roofing materials such as slate, tiles, and felt. Understanding the properties of each material is key to selecting the right one for your project.
What’s a typical price range I should expect for building materials?+
Prices vary greatly depending on the product and quality; basic timber can start from around £15 per metre, while high-end roofing tiles can cost upwards of £80 per tile. Generally, insulation ranges from £5 - £30 per square meter installed.
When is the best time of year to buy building materials?+
Demand tends to peak in spring and autumn as renovation projects begin, leading to potential price increases. Buying earlier in the year or during quieter periods can often secure better deals and avoid delays.
How do the subcategories (timber, insulation, roofing) differ?+
Timber focuses on structural elements and cladding, insulation concentrates on thermal performance and comfort, while roofing materials protect your home from the weather. Each requires different considerations regarding durability and installation methods.
What should I look for when choosing timber?+
Check for certifications like FSC to ensure sustainable sourcing and look for grading – structural grade is suitable for framing, while cladding grades are designed for exterior use. Pay attention to moisture content to prevent warping or shrinkage after installation.
How does insulation affect my energy bills?+
Properly installed insulation significantly reduces heat loss in winter and keeps your home cooler in summer, directly reducing the amount of energy needed to maintain a comfortable temperature – check the R-value for effectiveness.
What’s the difference between PIR and Rockwool insulation?+
PIR (polyisocyanurate) is closed-cell foam offering excellent thermal resistance but can be more susceptible to moisture damage, while rockwool is made from mineral fibres and offers good fire protection alongside decent thermal performance.
What are the sustainability considerations when choosing building materials?+
Opting for sustainably sourced timber (FSC certified), recycled materials, or products with low embodied carbon can minimize your environmental impact. Consider the durability of the material to reduce the need for replacement over time.
How important is quality when buying building materials?+
Investing in high-quality materials will ensure longevity and minimise future repair costs – always check product specifications, certifications, and manufacturer’s recommendations.
Where can I find more information about the retailer's returns policy for these products?+
Please refer to Amazon UK’s standard returns terms for details on eligible items and return procedures. You can usually find this information within your order history or on the product listing page.