The TimbA Journal

Engineering insights for timber construction.

Technical articles, specification notes and project commentary from our in-house structural engineers and the wider Rothoblaas UK network.

Vol. 02 · No. 14 August 2026 Published fortnightly
TLL vs SNK vs HTS-HT: Which Timber Screw for Which Job?
Featured

TLL vs SNK vs HTS-HT: Which Timber Screw for Which Job?

Why Choosing the Right Timber Screw MattersUsing the wrong screw in a timber connection isn't just a cosmetic issue — it can affect structural integrity, long-term durability, and the finish of your project. Whether y...

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Latest articles 48 articles
A modern timber-clad garden room with glazed doors in a landscaped back garden.
Carpentry

How to Build a Garden Room: Frame, Fixings and Weatherproofing

A practical guide to building a garden room that lasts: the base, the frame connections, weatherproofing and cladding protection, and how...

Water beading and running off a timber surface treated with a water-repellent wood coating.
Carpentry

How to Protect Timber Cladding from Water and UV Greying

How timber cladding weathers, why water and UV are the real culprits, and how a breathable, penetrating coating protects it while you cho...

Diagram of insufficient screw spacing and inadequate edge and end distances causing timber to split.
Engineering

Timber Fastener Spacing: Getting Screw Spacing and Edge Distances Right

A practical guide to timber fastener spacing: why edge and end distances matter, where the rules come from, and how to get them right usi...

Breather Membranes for Timber Frame: Choosing and Installing Them Right
breather membrane

Breather Membranes for Timber Frame: Choosing and Installing Them Right

A breather membrane is cheap to buy and easy to get wrong. What it does in a timber frame wall, how to choose the right vapour-open grade...

Eurocode 5 timber beam design diagram showing load, reactions and screwed connections
Engineering

Eurocode 5 Explained: How Timber Structures Are Designed in the UK

Every structural timber building in the UK is designed to Eurocode 5. A plain-English guide to what the code is, the strength and service...

Timber Connector Plates and Hold-Downs: Resisting Uplift and Overturning
Engineering

Timber Connector Plates and Hold-Downs: Resisting Uplift and Overturning

Most timber connections carry load down; hold-downs and tensile plates stop the structure lifting or tipping over. What connector plates ...

Hidden Decking Fasteners: How to Build a Deck With No Visible Screws
Carpentry

Hidden Decking Fasteners: How to Build a Deck With No Visible Screws

A deck with no visible screws looks cleaner and lasts longer. How hidden decking fasteners work, the difference between concealed connect...

Timber Joist Hangers: How to Choose and Install the Right Connector
Carpentry

Timber Joist Hangers: How to Choose and Install the Right Connector

A joist hanger carries a big responsibility in a small piece of metal. How to choose between face-fixed, concealed, and top-flange timber...

CLT Connection Design to Eurocode 5: A UK Engineer's Guide
CLT

CLT Connection Design to Eurocode 5: A UK Engineer's Guide

CLT panels rarely fail; the connections do the work. A UK engineer's guide to designing cross-laminated timber connections to Eurocode 5,...

How to use the TimbA fastener calculator: screws, dowels, and anchors for Rothoblaas connectors
Engineering

How to use the TimbA fastener calculator: screws, dowels, and anchors for Rothoblaas connectors

The TimbA Fastener Calculator works out how many screws, dowels, and anchors each Rothoblaas connector needs, with quantities pulled from...

Structural timber screws: how to choose the right fastener in the UK
Carpentry

Structural timber screws: how to choose the right fastener in the UK

Structural timber screws carry real load, so the right choice matters. A clear UK guide to fully versus partially threaded, sizing, coati...