Kytun 18/25mm Aluminium Dry Valley Trim For Slates  - Pack of 10

From£183.88 ex VAT£220.66 inc VAT

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Product info

Made To Order - Please note, once you place your order it cannot be cancelled.

Kytun Aluminium Dry Valley Trim is a high-grade, high-performance roofing solution that holds roof slates securely in place along the roof valley while directing rainwater safely into the valley trough. Engineered for use alongside the Kytun Aluminium Dry Valley Trough, this innovative trim is ideal for both natural slates and man-made fibre cement slates, providing a clean, secure, and maintenance-free finish to roof valleys. 

The trim eliminates the common issue of small slate pieces slipping or falling out, and provides a precise guide during installation, helping roofers achieve a sharp, professional finish with minimal effort. With no need for mortar, installation is significantly faster - up to 50% quicker than traditional lead methods - and can even be completed in wet weather conditions.

Manufactured from high-grade PPC aluminium, the Kytun Slate Dry Valley Trim incorporates a patented water drip and multiple outlet system to handle the heavy flow of rainwater typically directed into roof valleys. This advanced design promotes effective self-drainage, reducing the risk of water ingress while maintaining long-term durability in all weather conditions.

Available in two size options, the trim accommodates different slate thicknesses:

  • 18mm version: Suitable for slates up to 6mm thick
  • 25mm version: Suitable for slates up to 8mm thick

Fully compliant with BS 5534 requirements and NHBC guidelines, this dry fix system offers outstanding wind uplift resistance and rain protection, making it a reliable choice for modern roofing projects. Backed by a 30-year warranty, it provides long-term peace of mind with zero maintenance required.

  • Aluminium dry valley trims | Pack of 10
  • Designed for use with Kytun Aluminium Dry Valley Trough
  • Suitable for most natural & fibre cement slates
  • Patented water drip system with multiple outlets for efficient drainage
  • Securely holds slates in place, preventing slippage or fallout
  • Provides excellent wind uplift resistance & rain protection
  • Enables fast, mortar-free installation (up to 50% quicker than lead)
  • Can be installed in all weather conditions, including rain
  • Creates a clean, crisp & professional valley finish
  • Acts as a guide for accurate & consistent slate positioning
  • Maintenance-free with no need for future repairs
  • Environmentally friendly & 100% recyclable
  • Roof area on plan draining into valley: Maximum 100m2
  • Pitch Range: 25 - 60° with a maximum difference between the two adjacent roofs of 20°
  • Material: Pre-primed polyester-coated aluminium
  • Colours available: Black, Blue/Black
  • Fully compliant with BS 5534 & NHBC standards
  • Backed by a 30-year ALU range warranty

Kytun recommends the use of a low modulus mastic sealant as a “belt & braces” approach at each overlap.

Please ensure Kytun aluminium products are returned on a 3m pallet (as delivered). Kytun can offer a full return for non-damaged goods. Please send photographs if you require a return.

Roof Giant delivery Q&A

Delivery

How much does delivery cost?

Delivery charges will vary and will depend on the manufacturer, weight, size and delivery location. The cost is automatically calculated when you add items to the shopping basket.

How long will I wait for my delivery?

The estimated delivery times are shown on each product page, we will email you each step of the way to keep you informed. The majority of products can be delivered within 3-5 working days.We will advise you if the delivery period is different from than stated on our website.

Do you offer next day delivery?

If a product is available with next day delivery, this will be displayed on the product page or in the basket. If you have a particular item that you require quicker than the guide on our website, please contact our sales team on 01858 455055 during office hours, they will be able to confirm whether a quicker delivery is possible.

What if my delivery doesn't turn up on time?

Please contact our sales office on 01858 455055 or email sales@roofgiant.com and we will advise on the status of your order.

Do you offer free delivery if I spend a substantial amount?

Not as standard, we show the delivery charges separate once you go to the checkout so it is clear what you are paying for the products and delivery costs. If you are ordering larger quantities please contact out sales team who will be able to confirm if this is possible.

Do you deliver on weekends?

Not as standard, our deliveries are made Monday to Friday. If you do need an urgent Saturday delivery please contact out sales team on 01858 455055 during office hours who will be able to confirm. This will incur a premium charge if possible.

Do you deliver to Northern Ireland/Guernsey/The Scottish Highlands/Isle of Wight?

Some suppliers/couriers will deliver to these areas but not all, please contact our sales team on 01858 455055 or email sales@roofgiant.com during office hours for confirmation. If we are able to deliver the product you require, additional transport costs will apply, we will be able to confirm this to you. These additional costs are based on the manufacturer, distributor or courier providing the shipping on our behalf.

Do you deliver to Republic of Ireland, Europe and Rest of World? 

No, unfortunately we nor our suppliers can deliver outside of Great Britain (and Northern Ireland in some instances).

What if my delivery doesn't turn up on time?

Please contact our sales office on 01858 455055 or email sales@roofgiant.com and we will advise on the status of your order.

Returns Policy

Important: Please do not send goods back before speaking to our sales office.
📞 01858 455055 | ✉️ sales@roofgiant.com | 💬 Live chat

We recommend you take photos of the goods and packaging before returning, as this may be required for courier claims.

Your Right to Cancel

  • Under the Consumer Contracts Regulations 2013, you can change your mind within 14 days of receiving your order (or the final part of a split delivery).
  • You must notify us by phone or email first.
  • Goods must be unused, in original packaging, and suitable for resale.

Returns After 14 Days

  • Returns may be accepted up to 30 days but may be subject to a restocking fee.

Refunds & Costs

  • We refund the product price plus standard delivery. Premium delivery charges are non-refundable.
  • Refunds are issued within 14 days of returned goods being received (or proof of posting).
  • You are responsible for return shipping unless we arrange collection, in which case the direct cost will be charged.

Exclusions & Brand Policies

  • Some products and brands have specific return rules (e.g. VELUX, Castle Composites, Midland Lead).
  • Made-to-order items, bagged/powder/plaster products, and sale items are non-returnable unless faulty.

👉 For full details, including supplier-specific terms, please see our Returns & Refund Policy.

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