GOLD Heritage Skills Holders

cscs platinum award




About Us

                                     Full restoration to Retford Library               
What we do...

At Kierson we specialise in the restoration of timber windows and all timber architectural features including doors, columns, conservatories, orangeries, corbels.... Primarily, we are an architectural conservation company, we hate to see any timber feature and especially timber windows being replaced unnecessarily. At Kierson we understand the need to incorporate modern advances into period properties but we do this without signifcantly altering the property's appearance. At Kierson we are able to repair, draughtproof and generally overhaul and upgrade all timber casement and sash windows.

Based in Retford, Nottinghamshire, we are in an ideal location to reach customers throughout the country. We have worked from Dorset to the Isle of Skye.

Who we are....
                                 Kierson hoarding

We are a wholly family owned and run business with over 30 years experience in the repair and preservation of wood.
We are committed to high levels of customer service, employees' welfare and training and we also like to give a bit back.

Customer Service
We know doing a good job is what you expect. Please ask about our ten year guarantee.
We will always return your calls and phone you when we say we will. Staff will arrive on time, well turned out and polite- afterall it is your home.

"... I knew we were in save hands when they turned up on the first day, on time and clutching their own hoovers..."
                                                                     Mrs S. Rhodes.
                                                                     Ranskill, Notts
Staff Training and Welfare

All our operatives are full trained to use a very high quality repair system which incorporates modern technology and traditional repair methods.
For industry.... but also for the homeowner.....

CHAS and CSCS are national, industry accreditation schemes. These are instantly recognised by all contractors, procurement managers, surveyors and construction industry officials and is only necessary for such.

But as a homeowner even though these accreditaions aren't necessary, it does give you peace of mind that Kierson has been recognised by governing bodies to have reached a high level of proficiency both in the work it carries out and in its managemnet of Health and Safety.

CHAS -Contractors Health and Safety Assessment Scheme 

Health and Safety for Kierson

CHAS are dedicated to completing health and safety pre-qualification assessments to a nationally recognised and accepted threshold standard. CHAS is a founder member and past Chair of Safety Schemes in Procurement – Competence Forum or SSIP. 

CHAS is established as the market leader for health and safety pre-qualification in the UK. It is a non-commercial scheme available to suppliers (those who provide goods and services) and to organisations (buyers) looking for suitably competent suppliers.

For further information click on  

CSCS - Construction Skills Certification Scheme

                                                      Health and Safety for building sites

CSCS was set up to help the construction industry to improve quality and reduce accidents.

CSCS cards are demanded as proof of occupational competence by contractors, public and private clients and others. They cover hundreds of occupations.

There are different levels of cards relevant for different trades and different levels of competency.

We are extremely proud that all Kierson operatives carry the  GOLD CSCS cards.  The gold card is the advanced skill card and has been awarded as an  acknowledgement of the level of skill our operatives have in joinery and carpentry and particularly in relation to HERITAGE properties. Sometimes the Gold card is known as the Heritage Skills card.


For further information click on  

PASMA training for Kierson



               How to restore a sash window      Free site survey for rotten windows