Construction and new-build mastic in Crawley, Oxfordshire
Sealant work in Crawley for main contractors, managing agents and facilities managers: mastic packages for new-build and refurbishment projects, with a fixed quote first.
- Caulk cracking where joints are moving more than expected
- Sealant knocked or painted over by other trades
- A mastic package split between trades with no clear owner
Need construction mastic in Crawley?
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How we handle construction mastic in Crawley
Mastic is often where a new building first shows its quality to the client. Untidy or missed joints are among the commonest snag items. We seal so the snag list stays short, whatever the size of the scheme. We work on internal decorators’ caulk, floor and skirting junctions and sanitary and kitchen joints, and the failures we’re asked to look at most are perimeter gaps outside the sealant’s range and window and door perimeters that won’t pass inspection. Looking for mastic applicators who cover Crawley? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.
Construction in and around smaller places such as Crawley is often barn conversions, small groups of houses or extensions to halls and schools. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.
Every job we finish is backed by a 12-month workmanship guarantee. If our installation lets you down in that time, we return and fix it.
- Location
- Crawley (OX29)
- Region
- Oxfordshire
- Guarantee
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Different surfaces, different methods
Internal decorators’ caulk
Where the specification calls for it, acrylic decorators’ caulk goes on non-moving internal gaps before painting. It’s for gaps that stay still and get painted while moving joints need a flexible sealant.
Fire-rated sealant where specified
Not every penetration suits a sealant. Collars, wraps, batts and boards are specified for other services so we’ll flag where the detail needs something different. Record requirements are agreed with the quote.
Places near Crawley
Also in Crawley
Aftercare for building managers
After handover, a little attention goes a long way:
- Ask installers to correct oversized gaps first
- Ask cleaners to use soft cloths around fresh sealant
- Allow flexibility for external sealing in damp or cold weather
- Release areas for mastic once other trades have finished in them
The package carries our 12-month guarantee for workmanship. Damage by others isn’t a workmanship fault.
Frames with gaps too wide for sealant need sorting before the mastic goes on. Filling a wide gap with sealant alone sets up a failure, so the installer needs to correct it first. We raise them during our first walk of the area.
From enquiry to sign-off
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work normally takes anything from a day of snagging to several weeks of plot-by-plot sealing on a phased scheme, and we clear our waste as we work. For a building around Crawley, tell us how to find it and who will meet us. Add it to your enquiry and we will build it into the plan.
- First we look at the scope on site or from drawings.
- You receive a fixed quote covering scope, products and sequence.
- Paperwork is agreed and applicators are inducted on site.
- We seal plot by plot or floor by floor in line with the programme.
- Problems we find, such as oversized gaps, are raised straight away.
- The package is closed out, snags cleared and backed by our 12-month guarantee.
Preparing the site
- Let us know about inductions and permits
- Send your site hours and access windows
- Clear stock, furniture or equipment away from the joints
Request a quote
To get a fixed quote, call the office on 01277 525 020 or send photos by email. Our quote form is another easy route.
Read more
Construction mastic around Crawley: how the place shapes the job
Crawley lies roughly 64 miles out from central London. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, and each scheme needs its mastic sealed to programme. The area within 2 miles of Crawley holds plenty of hotels. When hotels extend or refit, the work is typically squeezed between peak periods, mastic included.
Further education sites such as Abingdon & Witney College: Witney Campus (1.6 miles south-east of Crawley) are extended and refurbished from time to time, with mastic often programmed into the summer break. For contractors refurbishing units at places like Crawley Mill Industrial Estate, less than half a mile south-west of Crawley, the mastic covers cladding panels, roller-door and window perimeters. Work at a hotel such as The Old Swan Hotel (to the west of Crawley) tends to be programmed around bookings, mastic included.
Crawley is about 1 mile north-west of Witney, in Oxfordshire. Our applicators travel to Crawley for work on mastic packages. Across Oxfordshire, 423 places are covered, Crawley among them. We also cover Oxford, around 12 miles from Crawley.
Anyone looking for construction mastic in OX29 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Buildings on Witney Hill, Farm Lane and Foxburrow Lane are within our area for mastic packages. 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) for mastic packages. Nearby towns on our patch include 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
We work on buildings around Wood Green School and The Lamb Inn, among other places. Crawley’s nearest station is Finstock station, about 3.6 miles north-east. Other landmarks nearby include Cogges Manor Farm Museum (1.9 miles south-east). Green spaces nearby include Blenheim Farm.
When it isn’t the sealant
Honesty saves time and money. New sealant won’t cure:
- Deciding which fire-stopping product a penetration needs
- Oversized gaps that need packing or adjustment by others
- Joints damaged after sign-off by following trades
If in doubt, speak to us on 01277 525 020 or email a schedule or drawings and we will say what we think before you book.
Joints and surfaces we work on
- Window and door perimeters
- Internal decorators’ caulk
- Cladding and panel joints
- Brick and block movement joints
- Sanitary and kitchen joints
- Floor and skirting junctions
Crawley: questions and answers
Could you schedule work at a campus like Abingdon & Witney College: Witney Campus for the vacation?
Yes. Education sites usually want the work in vacations or in phases during term, and we plan to suit. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.
Does your area include sites such as Crawley Mill Industrial Estate, near Crawley?
Yes. Our area takes in Crawley and its surroundings, with estates and business parks such as Crawley Mill Industrial Estate included. Send details of the unit and the work through our quote form for a quick quote.
How long does a typical visit take?
That varies with the scale of the job, though a typical visit normally takes anything from a day of snagging to several weeks of plot-by-plot sealing on a phased scheme. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.
Can you follow the specification on our project?
Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it, flagging anything that needs clarifying.
Can you come in just for snagging?
Yes. We clear snags by redoing joints rather than patching them to suit the programme.
What do you charge?
We don’t publish prices, as every site differs. With photographs or drawings, we can give you a fixed quote.
What guarantee comes with a mastic package?
Our workmanship carries a 12-month guarantee from sign-off. Damage by others after we’ve finished isn’t covered.
Why act early in Crawley
Clearing snags piecemeal is tempting when handover is close. A planned sweep of each plot or floor catches the lot in one go. We can run snagging as its own phase before handover. Older rural buildings around Crawley move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.
No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.
Why choose Mastic Doctor in Crawley
- Fully insured, including public liability cover
- Failed material removed, not covered up
- Matching to RAL references, product permitting
- Our applicators hold CSCS cards
Read how commercial sealant jobs are priced and our accreditations.
What sets the cost
Sealant work doesn’t have a standard rate, since sites vary so much. What we take into account:
- Whether old sealant has to be cut out first
- Joint width, depth and condition
- Location, for remote and island sites
- Working within restricted access windows
We don’t publish prices, since every building and every scope is different. For a fixed figure, call for a quote.
Before you send an enquiry
Whether it’s one area or a whole building, these details speed things up:
- How the joints are reached, and at what height
- When you need the work done
- A wide shot and a close-up of the area
- Rough lengths or quantities, or drawings if you have them
Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.