Over 30 Years Experience
2 Year Guarantee On Installation
Bespoke Available
Exceptional Customer Service
Resources
Here you’ll find a wealth of key information and resources for our rainwater and roofline systems. If you’re looking for quick answers to common questions, it’s well worth taking a look at our FAQs page. Alternatively, you can browse our Downloads section to find a range of helpful supporting documents, installation guides, and technical specifications.
Downloads
If you’re a professional client or looking to undertake your own installation, we’ve assembled a range of helpful technical specifications and in-depth supporting documents for you.
FAQs
We offer an installation service to projects across the North West of England.
We have installed in other regions, if you have a project which is further afield, please contact us as we may be able to assist.
Our systems are polyester powder-coated in house.
Products are powder-coated in Black (RAL 9005) as standard*, however we offer a wide range of RAL and British Standard colours. These colours can be selected in the basket area.
Yes, we offer a bespoke fabrication service, from standard profiles in non standard sizes to full bespoke systems. Just email over your requirements and we can assist.
We recommend installing our aluminium leaf guard.
Our aluminium leaf guard system helps to prevent fallen leaves getting into the guttering and causing obstructions.
Leaf guard can be fabricate to suit standard and non standard sized systems.
Seamless gutter can be installed in single gutter lengths of up to 30 meters.
The only joints in this system will be where you are inserting corners or adjoining to an existing seamless gutter system.
A union jointing clip is available for instances where sections of seamless guttering need to be connected together.
The seamless gutter system comes with an internal hanger fixing bracket. This bracket clips underneath the front lip return and onto the back of the gutter providing a non visible fixing. The back plate of the bracket is pre-drilled allowing easier installation.
Our seamless gutter is in a No 46 Ogee Style profile.
Available in two sizes:
W125mm x D95mm and W150mm x D125mm.
Please note; this type of guttering is available in a limited range of colours.
Yes, with the exception of seamless guttering.
Just select mill finish from the ‘choose your colour option’ box in the basket area.
Our lead-times depend on the volume of orders and or installations we are working through at the time of placing your order.
Lead-times can also vary depending on systems ordered and method of delivery.
Generally our lead-time is 5 to 7 working days, however we endeavour to get your order to you as soon as we can.
We will confirm all orders placed through our website and will include our current lead time in this confirmation.
For live lead-time updates please contact our office and we will be more than happy to assist with your enquiry.
All guttering lengths, corners and outlets come with 1 internal union clip. With the exception of the seamless guttering and cast aluminium guttering systems.
Union/jointing clips are also available separately as will be needed for any cut and piecing of sections.
We use and highly recommend Dow Corning C60 low modulus silicone, which is available within the accessories section of the store.
Over the years we’ve found that the effectiveness of this sealant speaks for itself, so personally we wouldn’t recommend any other here at GMD.
We’ve been established since 1994, which means we’ve got well over two decades of operation behind us – and counting!