Best roof insulation types by roof material and form for UK homes
Match insulation type to your roof construction (pitched, flat or metal) and hit the U-value your grant or EPC upgrade needs.
10 minInsulation
Loft, cavity, solid-wall and floor insulation: depths, materials, costs, and the damp mistakes to avoid.
25 guides
External wall insulation boards built for rain-exposed wallsWhich insulation boards handle driving rain, what thickness works, and how to keep exposed walls breathable and dry.9 min read
External wall insulation cleaning: how to remove dirt without damageClean external wall insulation with a soft brush and low-pressure water, avoiding jet washers that crack renders and strip protective coatings.11 min read
Cold flat roof insulation: which cold deck options suit small lofts bestDiagnose why your flat roof feels cold and compare rigid board, mineral wool and spray foam options for cold deck insulation in tight loft spaces.12 min read
More in Insulation
50mm PIR board for room-in-roof: when is it thick enough to meet UK rules
Find out if 50mm PIR board is enough for room-in-roof insulation and when thicker boards are required to meet UK regulations and reduce energy bills.
8 min
Reflective foil insulation: how it reflects radiant heat and cuts heat loss
Reflective foil slows radiant heat transfer by reflecting infrared radiation. It needs a clear air gap and good detailing. Performance varies with product, installation and climate.
7 min
50mm XPS boards around cold slab edges: compatibility and installation tips
Practical guidance for installing 50mm XPS insulation around cold concrete slab edges to improve thermal continuity and moisture control. Includes checks, compatible products and standards
12 min
UK loft insulation thickness
Clarify whether 270mm loft insulation meets UK recommendations and what that means for energy savings and grants.
4 min
Internal vs external solid wall insulation: 4 factors that decide the best fit
Compare internal and external insulation for solid walls by cost, room space, disruption, and energy savings to find your best UK retrofit choice.
7 min
Suspended timber floor insulation
A clear UK guide to insulating suspended timber floors with the right materials, preparation, and thickness to cut bills and drafts.
7 min
Polystyrene insulation R-values and when it outperforms other foam boards
Compare polystyrene insulation’s thermal performance and applications against other foam boards to choose the right material for your home.
5 min
Cavity wall insulation damp issues: 3 signs it’s causing or worsening damp
Learn the 3 clear signs cavity wall insulation is causing or worsening damp and how to diagnose it accurately in your home.
6 min
Light fixture insulation: how to tell if insulation can safely touch it
Find out if insulation should be inside your light fixture by checking its IC rating and safety features to prevent fire hazards.
5 min
Sheep wool vs wood wool board: moisture durability for damp basement walls
Sheep wool and wood wool board differ in moisture tolerance and durability for damp basement walls, affecting insulation performance and lifespan.
6 min
4-storey home insulation retrofit: when to choose top down or bottom up
Decide whether top down or bottom up insulation retrofit suits your 4-storey home by weighing access, heat loss priorities, disruption, and cost.
6 min
R30 rockwool batt insulation: thermal performance and worth in cold attics
Evaluate if R30 rockwool batt insulation delivers enough thermal value in cold attics to justify its cost and reduce heating bills effectively.
6 min
Insulation that fits 45mm stud bays: which types work and how to install
Compare insulation types that fit 45mm stud bays and learn practical installation tips to reduce drafts and bills with thin options.
6 min
Old home insulation removal: step-by-step disposal and under-house replacement
Step-by-step guide to safely removing old insulation, disposing of it correctly, and replacing under-house insulation to improve home efficiency.
5 min
Spray foam insulation application: 3 fixes for old roofs, patches, and R-value
Clear steps for applying spray foam insulation on older roofs, how to remove small patches safely, and what R-value 50mm closed cell foam delivers.
6 min
How home insulation blocks heat flow and what it does in a house
Insulation slows heat transfer in homes by blocking conduction, convection, and radiation, improving comfort and reducing energy use.
6 min
Home insulation R-values: when to upgrade and how to check aging loss
Check your home insulation’s R-values to reduce bills and drafts, and learn when and how to upgrade or improve aging materials safely.
6 min
Building insulation wear: key signs it no longer insulates and needs replacing
Learn when building insulation wears out, how to test its condition, and when replacement is essential to keep your home energy-efficient.
6 min
Cellulose loose fill settling rate: typical percent settled by 6 months
Understand typical cellulose loose fill settling rates within 6 months and how to measure coverage and plan top-ups to keep your home draft-free.
5 min
Best insulation for cavity walls filled with rubble: materials and tips
Safe cavity-fill and internal insulation options work best for rubble-filled cavity walls, considering moisture and settling risks.
8 min
Walkable attic insulation for 100mm joists: zone 6 R-value and damp checks
Learn which attic insulation materials fit 100mm joists and allow walking while meeting zone 6 R-value needs and how to check for damp after leaks.
7 min