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 Price Qty  
Black SS991561 (S10282579S) Black £13.15 inc VAT
£10.96 ex VAT
White SS991562 (S10387566S) White £13.42 inc VAT
£11.18 ex VAT
Grey SS991563 (S10282426S) Grey £13.15 inc VAT
£10.96 ex VAT

Delivery Information

FREE next day delivery on orders over £75 (ex VAT) or £10 charge applies.

Orders placed before 12 noon will be delivered the following working day to UK mainland subject to stock availability.

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.