Welcome to JSI Timber Frame Limited

Why choose JSI Timber Frame?

We have procedures in place, to ensure that from ordering, to completion of your timber frame, runs efficiently.
Qualified, competent, friendly staff with knowledge of our product, coupled with more than 10 years timber frame erecting experience.
We take pride in our product and service.
We are competitive on prices and in general timber frame is 5% more affordable than traditional brick & block.
We are a local company, based in Pembrokeshire, but covering Carmarthenshire, Ceredigion and South Wales.
We can manufacture houses, bungalows. flats, extensions on a supply and fix or supply only packages.
JSI can manufacture virtually any building your architect has designed for you.
We can also recommend architects to suit your design brief and budget.
JSI can offer project management services for your build @7% cost of total build cost
Free advice
Free quotations

Mission Statement:
We ensure that we will supply a quality product manufactured & installed accurately and efficiently.

Timber frames are precision engineered, remarkably strong and durable.
Over 70% of the developed world live in timber frame houses
9 out of 10 “self builders” choose timber frame, because no other building method is as versatile & cost effective.
Timber frame construction has a 30% shorter, more predictable construction time than conventional brick & block.
Timber frame has been meeting and exceeding thermal insulation standards for many years.

A typical timber frame home can be up to 35% more efficient to run than a conventional build of brick & block.

Wood is effectively a carbon neutral material
Timber is an organic, non toxic & renewable building material
Timber frame construction has the lowest CO2 cost of any commercially available building product.
Strength for Strength concrete uses 5 times more energy to produce than timber.
99% of wood in timber frames is sourced from sustainable European forests, where they plant more trees than they harvest.