Preservation Treatments (Surrey) Ltd was established in 1972 and, as a Helifix approved installer, have years of experience in providing Structural Repairs in South-West London. If you are looking for a Helifix approved installer in South-West London, call 0800 1422 513 to arrange for a Survey.

Structural cracking, horizontal cracking of bed joints, bowing brickwork, and cracked lintels are all signs that a building is undergoing movement of some description. Causes can include wall tie failures, lintel failures and even natural causes such as tree roots affecting the foundation. Correctly diagnosing the exact cause is essential for suitable remedial work to be carried out.

Preservation Treatments are an approved installer of the Helibeam System, which provides a rapid, cost-effective means of restoring structural integrity to buildings where masonry has failed and lost its load bearing capabilities. In combination with other Helifix ties and fixings it provides a comprehensive, reliable and economic system of repair and stabilisation.

Crack Stitching

Helifix Crack Stitching repairs and stabilises cracked masonry using stainless steel HeliBars bonded into cut slots with HeliBond grout for a quick, simple, effective and permanent solution. Cracked masonry is best stabilised by bonding HeliBar stainless steel bars into suitable bed joints or cut slots. Tensile loads are redistributed along the masonry to minimise further developments of the crack which may occur with simple injection methods.

Cavity Wall Ties

Preservation Treatments offer a versatile and rapidly installed mechanical pinning and remedial tying system that requires no resin, grout or mechanical expansion. Other types of tie are available for specialist applications. For securing delicate terracotta fixings, securing loose render and for securing a soft outer leaf material to a hard inner leaf.

Bulging Walls

The Helifix BowTie is a long stainless steel tie used to stabilise bulging walls, without any external plates, by securing them into the ends of internal floor joists. The BowTie HD is a heavy duty 12mm diameter threaded bar with self-cutting end used to restrain bowing building walls by securing them to internal parallel floor joists or roof beams.

0208 914 8189


01962 706188


01276 66466


Helifix Approved

Preservation Treatments are proud to be an approved installer of the Helifix Helibeam system.

Upon instruction, one of our Helifix approved Surveyors will asses the structural issues affecting your property and will develop a suitable repair strategy. They will provide a full report outlining their findings along with a quotation for the remedial work.

As a Helifix approved installer, this repair strategy will be looked over and approved by Helifix, who, where appropriate, will also offer an insurance backed guarantee.

Industry Recognised

Preservation Treatments are an accredited contractor with the Property Care Association (PCA), Constructionline, CHAS, Safecontractor and Trustmark. We maintain standards within the Industry that each professional body has set.

In recognition of our high standards, Preservation Treatments was proudly awarded PCA Contractor of the Year Award in 2013. Introduced in 2012, this category was designed to recognise PCA contractor members who excel throughout their normal day-to-day business. It is an achievement we are extremely proud of.


  • “Thank you for your report – it was very comprehensive and highly professional. Many thanks again for your excellent service.”

    Survey in Fleet, Spencer – 22nd January 2019
  • “I have been pleased with the three who were responsible for the work so please pass this on to David Morton. They were very professional in their approach, pleasant individuals, careful inside the house and have left the property tidy.”


    Damp-proofing and Specialist Rendering, London, Shelagh – 23rd November 2018
  • “I would just like to say what a great attitude and work rate Dean is putting in. It’s a challenging job given the age of the building and the wobbly alignment of the walls and I just thought you would like to know my thoughts.

    As military engineer project manager myself, it is refreshing to meet positive tradespeople such as Dean. Great work ethic. Thank you.”

    Damp-proofing and Specialist Rendering, Camberley, Richard – 24th October 2018
  • “Ivan has just left, having done a wonderful job in tanking out our vault.  It looks beautiful.  He was very careful and tidy and considerate in his work, and also extremely pleasant and patient with my questions!”

    Waterproofing, London, Elizabeth – 10th October 2018
  • Just a quick note to thank Alan and David for all their help.  I asked a lot of questions and they were very patient explaining.

    Waterproofing, South-West London, Siva – 20th August 2018
  • I would like to pass on my many thanks to your team who have been very professional through the process. In particular, Paul the surveyor was top class. He turned up on time, was very polite & charismatic, and very clearly examined and explained the situation to me for which I was most grateful.

    Survey in London, Jack – 22nd June 2018