Durability of Timber Resin Repairs

What makes our resin repairs so reliable?

Property Repair Systems - 01626 872886 - where you can talk to really reliable resin people

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All our structural repairs are computer calculated for consistency of design

Our Structural repair of buildings service includes the provision of:

1. Structural designs and method statements - part of our FREE estimating service

2. Structural Check Calculations - an option, from our computer system

3. Independent verification of our Designs by Structural Engineers - a further option, from our panel of qualified Structural Engineers

We offer a Structural Design and independent Calculation Service

Call us on 01626 872886 or E Mail: help@propertyrepairsystems.co.uk.

The Timber-Resin Splice materials are all top quality:

TIMBER - Kiln Dried, bonded in-house, C16 or C24, optional Hardwoods and air dried versions

STEEL - High Tensile Allthread to GRADE 975 8.8

STEEL TREATMENT - BZP, Bright Zinc Plated

The PRS Structural Epoxy Pouring Resin is well proven over 20+ years


Active Substance
DGEB A/F Epoxy Resins
Other Components
Cycloaliphatic Polyamine Adduct
Mix ratio - Do not vary the mix ratio
Liquids - Base:Hardener = 2:1
Bond Strength/Tensile Shear Adhesion
12 N/mm2
Compressive Strength - 81 N/mm2
Tensile Strength - 22 N/mm2
Flexural Strength - 42 N/mm2
Flexural Modulus - 5720 N/mm2
Specific Gravity - 1.53
Static Modulus of Elasticity
Et 17.235 KN/mm2
Young's Modulus >17,000 N/mm2
Aggressivity to other materials
No known aggressivity
Classification of unmixed components

Irritant & corrosive

Packaging - 2.5 litre and 7.5 litre three part
kits. Optional 1000cc cartridges, for use with skeleton guns
As supplied - two amber liquids and a bag of grey powder. When mixed - Mid Grey

Complete Timber Resin assemblies have been weathered for over 15 years

We manufactured a softwood slotted timber in the year 2000 and installed high tensile (unprotected) steel rebar inside Structural Epoxy Pouring Resin as a durability test. The timber was only surface treated using two coats of our Boron Ultra 12 powder in water at 10% solution.

The timber component was then left outside in full weather near the coast in South Devon to test the durability of the Epoxy Resin, the protective effect of the resin on the steel and the bond between the resin, steel and wood in widely varying conditions.


Durability test of Structural Epoxy Pouring Resin, steel and wood.

Beam upgrade left out in all weathers, Coastal Environment.

Arrows point to the steel bars where the upgraded beam has been cut in half.

Close up of wooden beam upgraded using epoxy resin and steel and then weathered for over 15 years

Close up of the cut end. No rust or rust stains.

No wood decay, splitting or separation.


1. Structural Epoxy Pouring Resin is unaffected by weathering, even in Coastal Environments - C4 Environments - for at least 15 years

2. Structural Epoxy Pouring Resin fully protects steel rebar from corrosion in a C4 Environment for at least 15 years

3. Structural Epoxy Pouring Resin remains fully bonded to timber for at least 15 years of wetting and drying

4. Softwood timber is well protected by Boron Ultra 12 at 10%, despite being in partial ground contact in a C4 Environment.

We are therefore confident that the combination of Structural Epoxy Resins, Bright Zinc Plated High Tensile Steel and Boron Ultra 12 treatment can more than cope with more normal indoor environments.

Timber-Resin Repairs | Cracks & Splits | Upgrading Strength | History | Contact

Property Repair Systems

T: 01626 872886

E: Mail us help@propertyrepairsystems.co.uk

Other Property Repair Systems Sites:

www.boron.org.uk - how to use Boron based insecticides/fungicides to treat timber rots and insect attack

www.dampness-info.co.uk - how to treat penetrating dampness in walls and plaster

www.deck-treatment.co.uk - how to treat patio decks and yacht decks

www.dryrot.biz - how to kill Dry Rot in buildings

www.drywallandfloor.co.uk - membranes for lining damp walls, floors, basements and cellars

www.epoxy-info.co.uk - epoxy resins for repairing wood, concrete, brick and stone

www.fire-door-paint.co.uk - upgrade doors to 30 minutes fire resistance

www.joist-repair.co.uk - how to quickly repair joists and beams of any size

www.propertyrepairsystems.co.uk - our Home Site

www.steel-fire-paint.co.uk - treat steel with Intumescent Paint to provide fire protection

www.woodworm-info.co.uk - how to kill and prevent Woodworm and Death Watch Beetle

www.woodworm-expert-advice-forum.org.uk - all your questions and our answers about Woodworm treatment DIY

Site written by: David Moore

David Moore, B.A. (Hons.), C.T.I.S., C.R.D.S. Technical Author