Dryseal is a component-based glass reinforced polyester (GRP) and is different from other systems on the market. It has a 20-year water-tightness guarantee for peace of mind, Dryseal is supplied as a kit of pre-cured parts, factory-manufactured under BS EN ISO 9001 and 14001 quality and environmental standards, which is fitted on-site by one of our Approved Contractors.
We have a network of contractors across the UK, each contractor having completed theoretical and practical training before installing Dryseal.Unlike ‘wet lay’ systems, the only liquid resin used during installation is to seal the joints between the various component parts. This substantially reduces the risk of protracted delays caused by weather conditions or quality defects in the finished product.
Another advantage of Dryseal over usual residential flat roofing solutions is that there is no requirement for the use of any naked flames or heat guns, considerably reducing the risk of fire.
As a premium-quality, glass-reinforced polyester (GRP) flat roofing system, Dryseal is suited perfectly to commercial flat roof projects such as new-build property construction and private sector refurbishment jobs. Unlike traditional wet lay GRP roofing products, it is a component-based system, and is manufactured under strictly controlled factory conditions to ensure the highest possible standards. It is BBA-approved, too, and comes with a 20-year materials and installation guarantee for complete peace of mind.
Condensation
Dryseal is a mechanically fixed system that doesn’t have bonding at the roof edges. As such, air can flow between the substrate and its membrane, meaning interstitial moisture is vented. This is an important consideration for over-roof applications as it eases condensation.
Roof plant and detailing
The component-based nature of Dryseal makes it ideal for projects which have complex detailing requirements, or where there is auxiliary plant installed. This means there’s no need to remove any roof furniture or plant, as the product can be fitted comfortably around it with ease.
Installation and service life
It’s essential that Dryseal is installed by one of our Approved Contractors, who will work in compliance with our instructions and using the appropriate fixings for the substrate in question. This is to ensure both safety and functionality.
Dryseal is a flexible system that can be installed on most roof substrates, but suitability will be confirmed as part of the initial quotation. The roof survey that takes place at this stage will also report on any substrate replacement or repair work that may be needed before installation can begin.
Providing installation is carried out properly and the Dryseal maintenance programme is adhered to, your roofing system can be expected to last for 40 years or more!
Heritage roofing projects – be it ensuring a finish which is sympathetic to the style of structure or to increase security by minimising the risk of lead theft – can be tricky with conventional products. Fortunately, Dryseal isn’t conventional. It offers a versatile solution for heritage roofing which lends itself to projects which require intricate detailing, compatibility with differing substrates and an effective lead replacement or copper replacement.
Designed for flat and low-pitched roofs, Dryseal is manufactured from high-grade polyester resins and glass reinforcement (AKA fibreglass or GRP) functioning as a single ply membrane. It is produced in the UK and serves as an ideal alternative to lead, as it doesn’t attract thieves and is far more cost-efficient.
Unlike traditional wet lay GRP systems, Dryseal is manufactured as a pre-cured kit using sophisticated processes in controlled factory conditions. This kit, containing preformed component trims and flat sheeting, is quickly and easily installed on-site to form the roof membrane for heritage roofing.
Hambleside Danelaw is approved for lead replacement under Secured by Design, the official Police security initiative aimed at preventing lead theft crime.
To learn more about Dryseal for heritage roofing, get in touch with us today. We would be happy to help with any query and advise on any heritage projects. All of our approved contractors are required to undergo training to ensure Dryseal is fitted correctly. For a list of our approved contractors, click here. You can also learn more about becoming an approved contractor.
Hambleside Danelaw offer free online webinars that can be used to increase your skillset and knowledge of GRP products for heritage roofing.
As a self-builder, what are your priorities when waterproofing your new home?
You will probably need…
- A waterproof roof covering system with a long-standing track record
- A product which is strong but lightweight with high puncture resistance
- A system which can deal aesthetically with the most complex detailing
- High standards of manufacture in accordance with BS EN ISO 9001
- Certification by the British Board of Agrément (BBA)
- A system that is safe to fit with a “green” roof
- A competitive price delivering excellent value for money
- Installation by specially trained contractors
- A meaningful 20-year guarantee with insurance cover
For those looking at a flat roof renovation for anything from a home to a garage roof, the benefits are the same. Nothing is too big or too small for Dryseal. Below are just some images of domestic flat roof refurbishments using Dryseal.
Why a Green Roof?
Green roofs are widely recognised as an ideal way of improving air quality in cities. Planners and Councils are beginning to use extensive plantation for air purification in order to reduce carbon dioxide and increase oxygen in the atmosphere. Green roofs also make a significant contribution to reducing polluting air particles and compounds not only through the plants themselves, but also through the growing medium.
They are also increasingly being used in efforts to reduce and delay water run-off during times of heavy and prolonged rain, a fact that can be significant in reducing localised flooding. A recent study in Germany showed that during a 10mm rainstorm, whilst 200 litres of rainwater fell onto an 18m2green roof, only 15 litres actually passed from the roof to the ground. But given that some water does escape, it’s important to ensure that the waterproofing membrane does not have an adverse effect on the quality of water which is released from a green roof after rainfall.
When waterproofing green roofs the membrane itself must also be taken into account when thinking about the overall environmental picture. The method of manufacture, component chemicals and long-term environmental impact of the membrane itself can be as significant as the benefits of a bio-diverse ‘green’ roof.
A green roof requires a strong, durable and light membrane to line it. GRP (Glass Reinforced Polyester) is an inert material that can be used with ‘grey’ water harvesting systems and potable water. In service, it does not release any pollutants or chemicals.
Green roofs offer exceptional environmental and cost benefits to other forms of roofing, thus is becoming a mainstream option for commercial and domestic builds.
Why use Dryseal for your green roof?
Dryseal is ideal as the waterproofing membrane under a “green” roof installation, because;
- Dryseal GRP is environmentally sound, leaving no residual chemicals after installation and is ideal to waterproof a “living” roof.
- Because Dryseal GRP is safe to use with fresh drinking water it is naturally ideal for use under a green roof.
- The unique way that the Dryseal system is jointed on site means that there is a permanent chemical “cross-link” between the site applied jointing resin and the resin used in product manufacture.
- As Dryseal joints are robust and permanent, this removes the need for the addition of a root barrier.
- The high impact resistance and resilience of Dryseal mean that the chances of damage by others during a green roof installation are much reduced.
- Dryseal comes with an installed 20 year ‘leak free’ guarantee.
As Members of Green Roof Organisation (GRO) we work in co-operation with GRO.
GRO is an independent not-for-profit Trade Association representing the UK Green, Blue and BioSolar Roofing industries.
If you want to hear more about using Dryseal for waterproofing green roofs and green roof design in general, please download the GRO Code of Practice.
