Less room loss
A thin build-up is easier to work around skirting, sockets, radiators and windows.
Specialist cork insulation · Bath
Specialist Cork Insulation for Cold Walls in Bath
CosyCork installs thin, breathable internal AeroCork systems for cold solid walls, bay windows and condensation-prone rooms across Bath, Somerset and Wiltshire.
Specialist cork insulationClean, careful installationBath, Somerset & WiltshireProperty-specific advice
Cold wall problems
When one surface changes the whole room
Many Bath homes have solid external walls, deep reveals, exposed bays and older materials. A wall can feel cold even with the heating on, and that colder surface can encourage condensation in corners, behind furniture and around windows.
Cold to the touch
External walls stay noticeably colder than the room air.
Condensation and mould
Moist air settles on cold corners, reveals and spaces behind furniture.
Hard-to-settle rooms
The room can feel uncomfortable even when the heating is running.
Cold bay windows
Several exposed faces and narrow details make bays especially vulnerable.
Our main service
Internal AeroCork Insulation Bath
On a suitable, prepared wall, the normal system uses two trowelled cork coats to approximately 3–6mm total, followed by a smooth compatible finish where required.
- Thin and minimally intrusive
- Breathable for suitable solid-wall backgrounds
- Improves wall-surface comfort
- Useful around bays, reveals and tight details
- Natural cork with thermal, acoustic and moisture-buffering qualities
How it helps
A slim cork layer, applied around the details
AeroCork is most useful where a careful, low-depth approach is needed: old solid walls, reveals, bays, small bedrooms and rooms where thick boards would be too intrusive.
Breathable approach
Suitable solid-wall backgrounds can keep a vapour-permeable internal finish.
Cleaner handover
Preparation, application and finishing are planned as one practical job.
Installation process
From first photos to a finished wall
- 01
Send photos and details
Tell us the postcode, property type, affected wall and what you are seeing.
- 02
Assess the cause
We check whether the pattern suggests condensation, water ingress or another issue.
- 03
Prepare and apply
Sound backgrounds are protected, prepared and coated around the room details.
- 04
Finish and hand over
The room is left tidy with drying, decorating and aftercare guidance.
Real internal cork work
A Bath solid-wall home, documented stage by stage
Genuine photographs show internal cork insulation being applied, shaped around details and finished ready for decoration.
Other services
Secondary cork and exterior services
Internal AeroCork remains the main service. These options cover specific details and selected exterior projects after assessment.
Cold walls and condensation
Practical assessment of cold surfaces, mould patterns, ventilation and whether cork insulation is suitable.
See service
Bay window insulation
Thin cork insulation shaped around cold bay walls and narrow window details.
See service
External SprayCork
A breathable, flexible and pre-coloured exterior cork finish for suitable prepared backgrounds.
See service
Conservatory roof insulation
Property-specific cork insulation options after the existing roof and lining are assessed.
See service
Stone Quartz coatings
Decorative exterior coatings applied only once the wall background is sound and ready.
See serviceProject proof
Genuine photographs from documented CosyCork work
The site uses documented internal AeroCork photographs and accurate service information so homeowners can see how the system is applied and finished.
Costs
What affects the cost of cork insulation?
There isn't a meaningful one-price answer before the walls are understood. The estimate depends on a few practical details.
Send photos and your postcode through the estimate form and you will get a clearer written view for your job.
- The wall area and number of rooms
- The condition of what's already there and how much preparation it needs
- The wall background and whether defects need resolving first
- Access, floor level and how much has to be moved or protected
- Details around windows, bays, sockets and fitted joinery
Areas we cover
Working across Bath and the surrounding towns
Bath is our main patch. We also work out into the nearby Somerset and Wiltshire towns and the villages between them.
- Bath
- Warminster
- Frome
- Trowbridge
- Bradford-on-Avon
- Corsham
- Chippenham
- Keynsham
- Radstock
- Midsomer Norton
Advice
Common questions about cork insulation
What is internal AeroCork insulation?+
It is a thin, trowel-applied cork-based coating used on suitable internal walls. A typical specification uses two cork coats totalling around 3–6mm, followed by a compatible smooth finish where required.
Can cork help with condensation and mould?+
By improving the temperature of a cold internal surface, cork can help reduce one condition that encourages surface condensation. Ventilation, heating and any underlying moisture defect still need to be considered.
Is it suitable for older Bath homes?+
Its thin, breathable nature can make it useful for suitable Georgian, Victorian and other solid-wall properties, but every wall must be assessed first.
Will I lose much room space?+
The build-up is far slimmer than thick insulated plasterboard systems, which is valuable in small rooms and around bay windows.
How do I get an initial assessment?+
Send your postcode, a short description and clear photographs through the form. We will advise whether a visit or more information is needed.
Free estimate
Show us the wall, room and property
A few photographs and practical details help us give a useful first response before deciding whether a property visit is needed.