Mastic & Sealant Contractors Lincolnshire | Proper Sealants ltd

Proper Sealants Ltd is a family-run mastic pointing and sealant contractor based in Bourne, Lincolnshire. We provide internal and external mastic, fire-rated sealing, air-test sealing and silicone replacement for housebuilders, main contractors and private clients across Lincolnshire, Cambridgeshire, Northamptonshire, the Midlands, East Anglia, South East Midlands, Buckinghamshire and Oxfordshire, with selected projects in North London.

Our services include:

• Internal and external mastic pointing

• Air-test sealing

• Fire-rated sealant works

• Movement and expansion joints

• Cladding and façade sealing

• Swimming pool and leisure facility sealing, including steam rooms

• Sealant removal and replacement

• Domestic silicone replacement

Based in Bourne, Lincolnshire. Working across Lincolnshire, Cambridgeshire, Northamptonshire, the Midlands, East Anglia, Buckinghamshire and Oxfordshire.

We travel to where the work is, with selected projects in North London.

Family-run business

Based in Bourne, Lincolnshire

Covering the Midlands, East Anglia and the South

Selected North London projects

NVQ-qualified operatives

Fully insured

SMAS & CQMS accredited

Our applicators work cleanly and efficiently, to a bespoke-home standard of finish. We use quality materials from trusted manufacturers such as Sika and Mapei, and match sealant colours and finishes to suit each area, from internal kitchens and bathrooms to external windows, doors and joints.

Selected residential projects

A selection of residential developments and show homes completed for housebuilders.

The Willows Ancaster
 

Mastic works completed at The Willows, Ancaster, for Bellway Homes.

Show Homes

Internal and external mastic completed across a range of three- and four-bedroom homes.

The Atrium

Mastic works at Overstone Leys in Northampton for Bovis Homes, covering internal and external sealant across multiple plots.

Show Homes

Internal and external mastic completed across multiple plots, including kitchens, bathrooms, windows, doors, movement joints and air-test sealing.

Reliable work. Clear communication.

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Telephone: +44 7507 394822

Email: info@propersealants.com

Address: 169 Beech Avenue, Bourne, PE10 9RB, United Kingdom

© 2026 Proper Sealants Ltd. Company No. 16319980. All rights reserved.

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