It is possible for any glazing system to develop a leak in the years following installation, with the cause likely to be through degradation of silicone sealants. Rooflight Electrical Services we can provide a leak investigation and replacement service to identify and cure the affected areas whilst minimising the disturbance to the occupants in the building. Our team of on-site applicators are fully trained to work at heights and therefore all leak issues, regardless of nature, can be remedied efficiently and at a competitive cost.


Your silicone sealant replacement will be carried out by one of our professional and trained applicators. Prior to any works being carried out a detailed Risk Assessment and Method Statement will be produced and submitted to you.


Please find below information for two of the high quality sealant products used by Rooflight Electrical Services. 


Dow Corning 791

Dow Corning 791 is a premium, one-part silicone sealant providing excellent adhesion without the need for a primer. Specified in the glazing industry and used by numerous other trades for high quality weathersealing, Dow Corning 791 is resistant to ozone, UV radiation & temperature variations. The silicone cures quickly and is tack free two hours after application.


Tremco SG300

Tremco SG300 is a high performance silicone sealant product used for a wide variety of glazing applications. The product provides exceptional cure stability and resists severe environmental conditions such as wind loading, driven rain, snow, sleet and extreme temperature variations.


Product datasheets can be downloaded by clicking on the following PDF documents (all links open in a new window).







Silicone sealing of rooflight