Technical & Structural Support

How to repair structural timbers - minimum cutting, permanent non shrink repairs

Property Repair Systems - 01626 331351 - where you can talk to really helpful resin people

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Technical information for structural timber repair using resins

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


To request any Structural Design or Calculation Service

Call us on 01626 331351 or E Mail: help@propertyrepairsystems.co.uk.


Materials used for Timber-Resin Splice Manufacture:

TIMBER - Kiln Dried, bonded in-house, C16 or C24, optional Hardwoods

STEEL - High Tensile Allthread to GRADE 975 8.8

STEEL TREATMENT - BZP, bright steel plated


PRS Structural Epoxy Pouring Resin

TECHNICAL DATA

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
Colour
As supplied - two amber liquids and a bag of grey powder. When mixed - Mid Grey


Timber Repair Method for beam ends

1. Cut out all rotted, loose or flaking material and vacuum to remove dust. Abrade or grind as necessary to provide clean, stable surfaces free of all contaminants.

2. Mix the two liquid components first (2.5/7.5 Litre packs), add the powder slowly (wear a dust mask) and then mix the three Structural Epoxy Pouring Resin components thoroughly using a mixing paddle in an electric drill.

3. Ensure that the temperature is above 5 degrees Centigrade, or pre-warm the materials, otherwise curing may be delayed or prevented. Cure time: 24 hours initial at 20C, 7 days full. Working pot life: 45 minutes at 20 degrees C. Minimum de-propping time 48 hours, subject to ambient temperature.


4. For injection, dispense the Structural Epoxy Pouring Resin into a 1 litre cartridge or use
Thixotropic Epoxy Injection and Laminating Resin.

Side slot Arch repair awaiting resin injection

Arch repair awaiting resin injection - side slot - Type D TRS.



PRS Thixotropic Epoxy Injection and Laminating Resin

TECHNICAL DATA


Active Substance
Bisphenol A/F epoxy & Aliphatic Amines
Other Components
Glycidyl ether and inert fillers
Mix ratio - Do not vary the mix ratio
- 2:1
2 measures of Base to 1 measure of Activator
Bond Strength/Tensile Shear Adhesion -
6 N/mm2
Compressive Strength - 30 N/mm2
Tensile Strength - 16 N/mm2
Flexural Strength - 20 N/mm2
Flexural Modulus - 503 N/mm2
Static Modulus of Elasticity
Et 656 KN/mm2
Young's Modulus >656,000 N/mm2
Aggressivity to other materials
No known aggressivity
Classification of unmixed components
Irritant and corrosive
Packaging
400cc and 1000cc two pot kits. Optional 400cc and 1000cc cartridges, for use with skeleton guns
Colour
As supplied - Bright Blue/Cream. When mixed - Off White


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


Property Repair Systems

T: 01626 331351

F: 01626 331143

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

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