Types of Loft Conversion beams and joists that we offer to eliminate the use of heavy and expensive steel
1. Existing Joist Ends rotten in the wall only - we supply a Timber Resin Splice Kit with a 45 degree face angle
2. Existing Joist not high enough - we supply machined add-on joist and epoxy resin for fixing
3. Existing Joists too bendy - we supply bars and resins for fitting into a central slot
4. New joists too long to take upstairs - we supply multi part joists, easy to connect once in the loft
5. Ring Beams too heavy - we build to order, in sections, for easy installation
6. Ridge Beam too shallow - we supply laminated add-on with bars inside, to reduce ridge intrusion
Severe excessive deflection, overloaded. Stiffened, laminated Ridge Beam parts for Loft Conversion.
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1. Rotted Joist End repair in a loft conversion - no ceiling damage
Joist Bearing Ends that have been eaten by Rot or Wood Boring Insects can be repaired using our Timber Resin Splice Kit, Type C45, which uses High Tensile Steel Bars, Zinc Plated Allthread embedded in Structural Epoxy Pouring Resin or Grout.
New timber component in place - note that the bars are now hidden in the slot, within the resin.
Independent Engineering calculation service available from us, from £350 per beam, Indemnified (Insured)
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2. Under sized Joists made taller in a loft conversion - no steel required
Joists that are not tall enough can be added to by using our machined to size joist extension pieces, which are simply bonded on top of the existing joists using our special Thixotropic epoxy Laminating Resin.
Thixotropic Epoxy Laminating Resin - colour coded for easy mixing. Precision fit machined Kiln Dried C24 Joist add on..
Independent Engineering calculation service available from us, from £350 per beam, Indemnified (Insured)
Go Direct to Timber Repair Shop
3. How to increase strength - joists or beams too bendy
Upgrade the Beam or Joist - cut a slot, or slots, along the length to within about 40mm of the base and bond in BS4449 High Tensile Rebar with Structural Epoxy Pouring Grout. This is know as a 'modified flitch' design and approximately doubles the stiffness of a typical timber, in bend.
Barn, Somerset - overloaded tie beams in a barn now carrying heavy clay tiles on the roof (had been a thatched roof and then was converted to a lightweight galvanized sheet roof).
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4. New Joists supplied in easy join sections
For more Technical Information and a Photo Gallery go to www.timber.org.uk
Joists machined with connection holes for bars and resin.
Note - in many cases only two or three holes are required for connection.
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5. Ring Beams made to order - no steel, multi part for ease of moving into position
A Ring or Box Beam can be supplied in sections, ready drilled or slotted to connect once installed in the loft.
Theory and Practice - top slot (Type C) connection extending an existing Ring Beam.
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6. Ridge Beam not strong enough, but no room for the correct depth of timber
We supply either a complete new Ridge Beam in easy to fit sections, but with steel inside to reduce the depth (to provide head height) or we supply an upgrade section to fit in place under the existing Ridge Beam, which is fixed in place using bars and resin..
Decorative Ridge Beam parts, ready to Laminate. Laminated Ridge Beam in Glulam.
For more Technical Information and a Photo Gallery go to:www.timber.org.uk
SHOPS
- TIMBER REPAIR SHOP
- EPOXY REPAIR RESINS SHOP
- JOIST REPAIR KITS SHOP
- FIRE PAINTS SHOP
- MEMBRANE FOR DAMP WALLS & FLOORS SHOP
- TIMBER REPAIR SHOP
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Contact | About Us | About the Author
Property Repair Systems
T: 01626 872886
E: Mail us help@propertyrepairsystems.co.uk
Other Property Repair Systems Sites:
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.timber.org.uk - systems of repair, with step by step methods
Site written by: David Moore
David Moore, B.A. (Hons.), C.T.I.S., C.R.D.S. Technical Author
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