About our Resin Injection System
Our injection system is suitable for all domestic, commercial, industrial, and public buildings. We use
of the art level monitoring equipment to monitor the injection process to repair the damaged soil. We
specialise in subsidence and structural repairs for domestic properties and commercial buildings with A
combined experience of over 150 years in the field.
How resin injection works
• We set up state of art level monitoring equipment in drains while works are taking
• We locate all other incoming below ground services
• We drill a series of holes in predesignated and designed locations and mechanically ram lances
into place down to required depths
• We then inject the resin in our highly controlled method, repairing, strengthening and
compressing the soil below the foundations and lifting if required the structure above
More benefits of resin injection
• We offer a fixed price contract
• No negative affect to your home insurance or any future insurance policy
• No negative affect when it comes to refinancing or selling the property
• Cost effective
• Speed – the fastest way to resolve your problem usually within 1-2 days
• Efficiency – targeted to the specific problem area
• Minimal disruption – no excavation and you can stay in the property during the process, quick
set up and completion
• Non invasive once completed no evidence of works having taken place. Guarantee for peace of
mind – 25 year guarantee and certificate of structural adequacy included in our price
• Annual inspections and reissue of COSA certificate for extra peace of mind for the first 5
years guarantee and Certificate of Structural Adequacy included in our price
• Minimal environmental impact – small plant and environmental neutral products
Filling and Stabilisation
Soil solidification, ground stabilisation or soil injection is a method used for improving the stability of
soil. For this purpose, special binders are injected into the substrate. These special binders make the
foundation soil permanently resistant to mechanical stress. Another objective of soil solidification is to
make the soil as resistant to water and frost as possible.
Soil stabilisation measures prevent the occurrence of subsidence and resulting deformations in building
structures. Barely susceptible vibrations are frequently the cause of subsidence. However, subsidence is
also caused by water withdrawal and related soil erosion. This can cause the formation of voids or sinkholes
in soft soil layers. In this case soil stabilisation and ground solidification measures are mandatory.
Unconsolidated soil can be stabilized and solidified by means of foundation soil injection. The special
products used for foundation soil injection measures are based on silicate and polyurethane resin and are
characterized by their high strength and fast curing process.
How Resin Injection works for you
• Site Visit - Our process starts with one of SAU groups experts visiting site to
undertake a site survey to determine where the injection process is to take place, how deep into the soil we
need to inject and if there is clear access to undertake the work. Once the survey has been completed we
send out a detailed work order and insertion plan to be agreed with the client and we book your in the works
in a agreeable date.
• Onsite Process - A series of small holes are drilled through the ground/slab or soil to
facilitate the injection of the ground stabilising resin. We then inject the resin to the desired depth
directly below the foundations. The resin then stabilises the ground and in some cases raising to the
required height but not in all cases. Our ground stabilising solution is durable and effective, resulting in
ground improvement that will last. We reinstate where the work has taken place and complete the whole
process for you giving you peace of mind.
• Completion Pack - The work undertaken is covered by a 25 year guarantee and we issue you
with a certificate of structural adequacy. And annual 12 month reinspection and reissue of COSA certificate.
• Structural Repairs - Cracks and movement can happen in buildings and can progress for a
variety of different reasons. It is vital to diagnose the origin cause of the cracking in order to be able
to recommend the accurate crack repair system. Most cracks can be diagnosed by the crack pattern and the
position on the crack on the wall or structure. At SAU group we have our own in house design and
investigation team who can offer early investigation and reports we can also offer a full repair scheme
using the latest methods and equipment.
Filling and Stabilisation
SAU group specialise in investigating, diagnosing, repairing and the monitoring of cracks.
Common causes of cracking on modern and period properties are:
• Lintel Failure - typically caused by the removal of windows and doors on dated
• Thermal Cracking - insufficient provision of movement joints is conceivably the most common
reason of cracking in cavity wall construction
• Wall Tie Failure - corroding wall ties or insufficient quantity of ties can lead to cracking
and in the most severe of cases make the structure or wall collapse
• Lateral Restraint - inadequate tie-ing of the walls to the floor and roof joists causes
cracking and bowing interior and externally, mostly on dated properties
SAU group can offer you an a free initial consultation to find out the origin cause of the crack repairs to
your property, then we can offer you with the most economical contemporary repair systems, with the
slightest disturbance to all involved. SAU group operatives are extremely skilled and qualified in dealing
with all kinds of current day repair systems for crack repairs. This may mean fitting masonry reinforcement
(Helical Bars), resin injection system.