Your Guide to Timber Cladding Profiles: Find the Perfect Fit with Southgate Timber

by

Southgate Timber

May 12, 2025

Timber cladding is one of the most popular ways to transform the look of your home, garden room, extension, or commercial space, and for good reason. It adds natural beauty, warmth, durability, and kerbside appeal, making it a top choice for both architects and DIYers alike. But with so many timber cladding profiles available, how do you know which one is right for your project? We’ve put together this easy guide to help you understand the most popular cladding profiles we supply at Southgate Timber, so you can confidently choose the right look and function for your space.


1. Tongue & Groove V-Joint (TGV) - ST0 & ST1

  • Look: Elegant, interlocking boards with a subtle V-groove between each board.
  • Best for: Horizontal or vertical installations on everything from garden offices and cabins to contemporary home exteriors.
  • Details:
    • ST0: Narrow width (94 – 95mm) for a classic, traditional look.
    • ST1: Wider width (140 – 144mm) for a modern, bold finish.
  • Timber types: Western Red Cedar, Siberian Larch, Douglas Fir, Thermo Ayous, Thermowood Pine, Far Eastern Hardwood.
  • Why it’s popular: TGV is a timeless profile that works across both residential and commercial spaces, offering versatility and strength.

2. Channel Groove - ST6, ST10, ST65

  • Look: Defined shadow gaps that create a sleek, contemporary appearance.
  • Best for: Modern home exteriors, garden studios, and stylish fencing.
  • Details:
    • ST6: Vertical, wide boards (144mm).
    • ST10: Horizontal, wide boards (140 -144mm).
    • ST65: Vertical, narrow boards (94 - 95mm) for a refined, elegant look.
  • Timber types: Western Red Cedar, Siberian Larch, Douglas Fir, Thermo Ayous, Thermowood Pine.
  • Why it stands out: The channel groove profile is ideal for customers seeking a modern architectural style with clean lines.

3. Shiplap - ST7

  • Look: Overlapping horizontal boards with a clean, shadowed joint.
  • Best for: Sheds, workshops, summerhouses, garages, and rustic-style buildings.
  • Details: Western Red Cedar 18 × 144mm.
  • Why you’ll love it: Shiplap is known for its weather resistance, providing excellent water runoff and durability while adding character.

4. Rainscreen / Parallelogram - ST50

  • Look: Horizontal, angled boards with open joints for a ventilated, minimalist finish.
  • Best for: Contemporary homes, cladding feature walls, and garden rooms.
  • Details:
    • Western Red Cedar 18 × 144mm
    • Thermo Ayous 20 × 70mm.
  • Why it’s unique: Rainscreen/Parallelogram cladding allows for natural airflow behind the boards, improving moisture control and extending the life of the timber.

5. L-Section (Corner Trim)

  • Look: Smart, protective corner detailing that completes your cladding project.
  • Best for: Adding a professional finish to external corners and edges.
  • Timber types: Western Red Cedar, Siberian Larch, Douglas Fir, Thermo Ayous, Black Barn.
  • Why it matters: A small but vital detail, L-section trims protect vulnerable edges from weathering and give your project a polished look.

Which Timber Should You Choose?

At Southgate Timber, we offer all of our profiles in premium timber species, including:

  • Western Red Cedar: Lightweight, durable, naturally beautiful.
  • Siberian Larch: Dense, tough, with a stunning pale golden tone.
  • Douglas Fir: Strong and stable with a warm, reddish hue.
  • Thermo Ayous: Lightweight, highly stable, thermally modified.
  • Thermowood Pine: Treated pine with enhanced durability.
  • Far Eastern Hardwood & Black Barn: For select projects with specific needs.

Get Expert Help from Southgate Timber

Not sure which cladding profile is right for you? Our team is here to help. As one of the UK’s leading timber cladding suppliers, we offer expert advice, premium timber selection, nationwide delivery, and if you need more time to choose - easy-to-order samples! Explore our full range of timber cladding profiles under the Profiles page on our website or get in touch with our team today!

 

 


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