Weatherproofing Silicone Sealant

Alumasc Low Modulus 310cc Dow Corning 791 Silicone Mastic Sealant is used as a protective weatherproof seal for all Alumasc Rainwater Systems.

Apply sufficient sealant between the gutter and the socket union clip so that some squeezes out of the joint when tightened. A minimum 3mm thickness should be applied right across the joint and around the holes. 

Price Options

Code Description Brand Price Qty  
Black SS991561 (S10282579S) Black Alumasc £13.93 inc VAT
£11.61 ex VAT
White SS991562 (S10387566S) White Alumasc £14.21 inc VAT
£11.84 ex VAT
Grey SS991563 (S10282426S) Grey Alumasc £13.93 inc VAT
£11.61 ex VAT

Technical Information

Manufacturer: Alumasc

Delivery Information

Our delivery charge is £20 (inc VAT)

Some products have extended delivery times. These are highlighted in the individual product sections.

Give us a ring on 0330 123 1884 if you have any specific delivery issues.