Nova Construction Products Limited offer an extensive range of sealants and mastics for use within the roofing and cladding industry.

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Cartridge Sealants 

Soudaflex 40FC Polyurethane Sealant 

310ml Cartridge

Soudaflex 40FC is a high quality, elastic, 1-component sealant based on polyurethane. 

Product Features:

  • Immediate bonding strength. 

  • Stays elastic after cure. 

  • Good adhesion to many substrates.

  • Good resistance to chemicals. 

  • Developed for concrete applications. 

  • Paintable after use. 

General Purpose Non-Setting Mastic

310 ml Cartridge 

A durable air and waterproof seal between overlapping metal sheets. 

Product Features:

  • High quality non setting mastic. 

  • Polybutylene based elasto-plastic sealant. 

  • Easy to apply. 

  • Good adhesion to most surfaces. 

  • Weather & chemical resistant.

  • Available in grey, white or black. 

Fischer Fire Retardant Foam

750ml Can

A single component, self expanding polyurethane foam which has been designed to be self curing via the absorption of moisture from the atmosphere. 

Product Features:

  • Efficient seal against smoke/gas.

  • Good adhesion to most substrates. 

  • High bond strength. 

  • Fully paintable.

  • CFC free. 

Construction Foam 

750ml Can

A single component polyurethane foam for filling, sealing and insulating of joints between walls and ceilings, around window and door frames, between pre-fabricated construction elements and around cables and pipes. 

Product Features:

  • One component polyurethane foam based on a moisture curing polymer. 

  • CFC free.

  • Cured foam can be cut and painted. 

  • High volume - low expansion. 

  • Resistance against water & chemicals. 

Low Modulus Silicone 

310ml Cartridge 


Non-toxic, solvent-free, low modulus, multi-purpose, one component silicone sealant (RTV-1), based on a neutral oxime curing system. 

Product Features:

  • Non toxic, solvent free. 

  • High resistance to ageing.

  • Temperature range of (-50°c to +150°c).

Intumescent Acrylic Sealant 

310ml Cartridge

A halogen free, polymer emulsion based sealant that swells when subjected to temperatures in excess of 125°C and forms a char coat that  restricts the passage of smoke and fire. 

Product Features:

  • Excellent adhesion to a wide range of substrates. 

  • Will not harden or crack. 

  • Can be overpainted. 

  • Halogen free.

  • Swells when subjected to temperatures in excess of 125°c and forms a char coat that restricts the passage of smoke and fire. 

Dow Corning® 700 Firestop Silicone 

380ml Cartridge

A low modulus, one-part, neutral curing, fire-rated sealant. It has excellent unprimed adhesion to a range of common construction substrates including stone, steel, masonry, brick, wood, etc.

Product Features:

  • Meets BS 476 Part 22.

  • Excellent Adhesion to OST Substrates.

  • Joint movement capability ±50%.

  • Fire rating of up to 4 hours can be achieved.

  • Tack free in 1.5 hours.

  • Excellent weathering characteristics.

Dow Corning® 791T Weatherproofing Sealant  

310ml Cartridge

A one-part, neutral curing, low modulus silicone sealant particularly suitable for general glazing and weather sealing in curtain wall and building façades. 

Product Features:

  • Neutral cure.

  • Low odour. 

  • Resistant to ozone, ultra-violent radiation and temperature extremes. 

  • Joint movement capability ±50%.

Skeleton Gun

Mastic gun.

Product Features:

  • Suitable for use with 310ml cartridges.

Many other brands of cartridge and gun sealants are available. 

Butyl Strip Mastic Sealants 

Butyl Strip


Creates an excellent seal in situations such as side and end lap joints.

Product Features:

  • Self wound. 

  • Easy to use. 

  • Good adhesion to most building materials. 



Liner panel side lap sealant. 

Product Features:

  • A high performance air seal and moisture barrier tape for side lap joints of metal roof and wall liners. 

  • Reduces condensation and increases air tightness. 

  • As recommended in the MCRMA Technical Paper #14 to comply with approved document L2:2006. 


PVC Tape 

33m per roll 

PVC Electrical Insulation tape. 

Product Features:

  • Flame retardant.

  • Self extinguishing. 

Aluminium Foil Tape 

45m Per Roll 

For sealing profiled sheets and joining foil face insulation boards. 

Product Features:

  • Good initial tack.

  • Outstanding temperature & ageing resistance.

  • UL723 fire rating approval. 

EPDM Foam Tape and Cold Bridging Tape for air sealing & anti-vibration are also available in various sizes. 


Touch Up Paint  

For touching up small scratches or to cover up cut ends. 

Product Features:

  • Available in many BS/RAL colours.

  • 250ml can size. 

PVC Filler & Repair Paste

Commonly used in association with coated metal fabrications such as fascias and wall cladding to provide weathertight seals between panels or to be used as a filler. 

Product Features:

  • Available in many BS/RAL colours.