Mastic sealing for building owners and managing agents in Crawley, Oxfordshire
Mastic sealing for building owners, managing agents and housing associations in Crawley and across Oxfordshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- A mix of products and colours from past repairs
- Mastic failing across several blocks on an estate
- Leaks at window and door perimeters
Mastic sealing near Crawley
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Our process
Tell us your site hours and access windows and we will plan around them. While we’re working, the area stays contained and tidy, and we check in with your contact before moving on to each new area. Smaller jobs around Crawley can be grouped with others nearby. A fixed quote is given before anything starts.
- We check the asbestos register for older buildings and look at the joints.
- A fixed quote covers the joints, products and order of work.
- Failed mastic is removed completely.
- Joint faces are cleaned, backed and resealed.
- We finish each building before moving to the next.
Getting the site ready
- Let building users know which areas are affected
- For older buildings, check the asbestos register before work
- Confirm the product named in the specification
Request a quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, call the office on 01277 525 020 or email us.
Related advice
How we handle mastic sealing in Crawley
Owners and agents usually inherit a building’s mastic rather than choose it, and it ages quietly: it sits round windows and doors, along external joints and through communal areas. When it hardens, splits or pulls away, water and draughts follow, and occupiers start reporting it. The enquiries we see most involve damaged joints in communal entrances and corridors and the same joint failures repeated across a portfolio, across communal kitchens and washrooms, shopfronts below residential blocks and balcony and threshold joints. Facilities teams, main contractors and managing agents in Crawley tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
Around smaller places like Crawley, older walls fitted with newer windows are a familiar sight. The mastic needs to suit an irregular masonry face and the look of the building.
Whoever the client is, the cover is the same: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Where
- Crawley (OX29)
- Region
- Oxfordshire
- Guarantee
- A 12-month guarantee
- Quotes
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Questions we’re asked in Crawley
Will you take on work at estates like Crawley Mill Industrial Estate, close to Crawley?
Yes. Our area takes in Crawley and its surroundings, with estates and business parks such as Crawley Mill Industrial Estate included. Photos and a short description are enough for a first look.
We manage a building near Finstock station. Can you help?
Yes, we work for agents, landlords and housing associations with blocks of every size. Send the address, photos of the elevations and your access arrangements, and we’ll give a fixed quote.
Can you send RAMS and CSCS details before starting?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We are CHAS accredited and a Constructionline member.
Can you work to our specification?
Yes. Send it with your enquiry, and the quote will be based on it, flagging anything that needs clarifying.
How long will the new sealant last?
It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.
Do you check for asbestos in old sealant?
Some mastics in pre-2000 buildings contain asbestos. We ask for the asbestos register or survey before work starts, and if it’s suspected, work stops until it’s tested.
How do you reach windows on upper floors?
It depends on the building. We agree access with you at quote stage so there are no surprises.
What we can’t put right
A few problems need another trade or a different fix, and we point that out rather than sealing over them:
- Asbestos-containing sealant, which we don’t remove
- Leaks through the frame itself rather than the perimeter
- Cracked or crumbling render, brick or stone at the joint edges (we will tell you if so)
If you’re not sure, just give us a call on 01277 525 020 or send details through our quote form and we will give you a straight answer.
Where we work in Crawley
- Communal kitchens and washrooms
- Communal entrances and stairwells
- Shopfronts below residential blocks
- External wall and movement joints
- Window and door perimeters on blocks
- Balcony and threshold joints
More services for Crawley
Why it’s worth doing now in Crawley
Reacting to every complaint means sending someone out block by block. A planned programme treats each building once and is simpler to manage and budget. Converted and older buildings near places like Crawley tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.
Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.
Why clients in Crawley choose us
- RAL and finish matching where the product range allows
- CHAS accredited contractor
- Standard and matched colours in many product ranges
- Work to your specification and the manufacturer’s guidance
After the work
To get the most from the new sealant:
- Check the asbestos register before any old mastic is disturbed
- Group repairs into a planned programme
- Keep a record of when each building was resealed
- Reduce knocks to communal area joints
Add mastic joints to your cyclical inspections. Check for splits, open joints, brittle mastic and lifting edges and record where they are.
Planned resealing is easier to budget than emergency repairs. A programme can start with the worst buildings and work down the list.
What the job involves on each surface
Tenement and older buildings
Older mastic can contain asbestos, so we check the asbestos register or survey first. Suspect material is tested before work continues.
Commercial and mixed-use buildings
Landlords with commercial portfolios have shopfronts, office entrances and external joints to look after. A planned programme suits multi-building portfolios.
Site staff or a sealant specialist?
General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class.
There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.
Frames, entrances and external joints in Crawley
The South East is one of the drier parts of the UK. Outside work still depends on dry joints, and south- and west-facing elevations, which take the most sun and rain, often age first. The 2 miles around Crawley include two care or nursing homes. Frame mastic on care buildings is best renewed elevation by elevation, with the manager deciding timings.
If you own or manage units on a site such as Crawley Mill Industrial Estate, less than half a mile south-west of Crawley, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit. For agents with blocks near Finstock station, which lies north-east of Crawley, a block-wide mastic programme deals with frames, balconies and entrances in one go. Older community buildings, Church of St John the Evangelist among them, often have frames of mixed ages whose mastic varies.
Crawley is about 1 mile north-west of Witney, in Oxfordshire. Commercial clients in Crawley can call on us for mastic joints, as part of our coverage of Oxfordshire. We work across 423 places in Oxfordshire, large and small. Our Oxford page has more on work in that area.
Work on mastic joints is covered throughout OX29, for business premises of every kind. Among the streets we cover are Witney Hill, Farm Lane and Foxburrow Lane, and sites on any of them can send details for a fixed quote. Nearby places we also cover include Leafield (2 miles north-west), Swinbrook (4 miles west), Ascott d'Oyley (4 miles north-west), Ascott-under-Wychwood (5 miles north-west) and Ascott Earl (5 miles north-west). Further afield, our area takes in Oxford (12 miles east), Abingdon-on-Thames (13 miles south-east), Carterton (5 miles south-west), Wantage (15 miles south), Grove (14 miles south) and Faringdon (11 miles south).
What’s near Crawley
Locally, jobs take us to sites close to Wood Green School and The Lamb Inn, among other places. For rail, the closest station is Finstock station, about 3.6 miles north-east of the centre. Nearby you’ll also find Cogges Manor Farm Museum (1.9 miles south-east). The countryside around Crawley includes Blenheim Farm.