
The true luxury?
Comfort.
A beautiful home, considered from within.
TSK LtdSpecialist insulationFrom beautiful architecture to a comfortable interior, the difference begins beneath the finish. TSK brings specialist care to insulation, membranes and the connections between them.

A beautiful home, considered from within.

Warmth, quietness and the feeling of being perfectly at home.

Specialist insulation and carefully connected membranes, installed to your project’s agreed design.
Insulation experience on projects with
The warmth on a winter morning.
The quiet of a well-made room.
The feeling of being perfectly at home.
Beautiful architecture is only the beginning. TSK specialises in the insulation and airtightness behind bespoke homes, bringing care to the layers that shape everyday comfort.
Meet the people behind the detail
Architectural inspiration / Clay BanksExplore the layers behind a more comfortable home. Select a detail to see where specialist attention matters.
Every home needs its own coordinated specification. Illustration shows principles rather than a prescribed build-up.
Careful fitting at slopes, eaves and roof windows helps maintain the specified insulation layer. Ventilation paths and moisture control follow the roof design.
Explore roof insulation ↗An installation package shaped around your drawings, your construction and the performance you are working towards.
Walls, linings and building fabric. Carefully fitted to your agreed specification.

Membranes, laps and junctions. Continuity in the places that count.

From open lofts to vaulted ceilings. Particular care for complex geometry.

From mineral wool and rigid boards to reflective systems and natural fibres. The right materials, carefully sourced and fitted to your specification.
Explore our insulation materialsSuperglass · Knauf Insulation
Glass and rock mineral wool in rolls, batts and slabs, chosen for the specified thermal and acoustic requirements.
Explore the rangeCelotex · Kingspan · Recticel
PIR and phenolic boards for the specified wall, roof or floor build-up, with careful fitting at edges and junctions.
Explore the rangeACTIS · Thermic Technology
Honeycomb insulation, multifoil systems and reflective layers, installed with the air spaces and details their specification requires.
Explore the rangeNatural-fibre alternatives
Sheep’s wool rolls and batts for projects where natural fibres are part of the brief, selected to suit the construction.
Explore the rangeGlidevale Protect membranes and airtightness products sit alongside our insulation ranges, helping connect the air and vapour-control strategy.
We work with some of the country’s largest insulation manufacturers and suppliers, so we can source just about any insulation product at competitive prices.
Have a particular brand or product in mind? Send us the specification, thickness and quantities and we’ll confirm availability, lead times and a project price.
Discuss your materials & specification
Architectural inspiration / Premier Timber Frame archiveA dramatic roofline. A deep window reveal. A beautifully resolved junction. The details that define your home deserve the same attention behind the finish.
We work with homeowners, architects and main contractors to coordinate the insulation, membranes and service zones within the agreed scope.
For architects & self-buildersReal details from TSK’s installation archive. The practical work beneath the finished room.
View the installation portfolio
A closer look at insulation, vapour control and the service zone working together.
Explore the detail
Internal insulation lining and the careful detailing required around complex roof shapes.
Explore the detail
Insulation at stairwells and wall junctions, where coordination makes the difference.
Explore the detailPrevious TSK installation work. These examples are not presented as certified projects or measured performance results.
Share the location, drawings, construction type and performance brief.
Discuss the specified build-ups, junctions, access and programme with your project team.
A clear installation package sets out the insulation, membrane and service-zone work.
Careful fitting and coordination before the work is closed up.
We use Superglass and Knauf Insulation mineral wool, ACTIS and Thermic Technology reflective systems, sheep’s wool insulation, Celotex, Kingspan and Recticel rigid boards, and Glidevale Protect membranes. We work with some of the country’s largest manufacturers and suppliers, so we can source just about any insulation product at competitive prices. Share your specification and we’ll confirm availability, lead times and a project price.
Yes. TSK’s focus is specialist insulation and airtightness for individual homes and carefully considered residential projects. We work with self-builders, architects and main contractors across Cornwall, Devon and the wider South West.
We install to the agreed building-element specification and coordinate the practical details with your designer. A U-value is calculated for the complete build-up, including repeating thermal bridges; insulation thickness or a product label alone does not establish the finished wall or roof performance.
TSK specialises in the insulation and associated membrane and service-zone package. We work alongside your architect, timber-frame supplier and main contractor rather than offering a full house-building service.
Airtightness controls unintended air leakage. Fresh air should be provided through a properly designed ventilation strategy. Insulation, airtightness, moisture management and ventilation need to be considered together.
No. Passivhaus is a whole-building standard involving design, modelling, construction quality, testing and, where sought, independent certification. TSK can discuss the installation package for a project pursuing demanding performance targets, but does not promise certification or a particular test result.