West Berkshire · England
Fire Rated Sealant in Colthrop
Problem with your fire-stopping gaps in Colthrop? We cut out the old, prepare the joints and apply the right sealant.
- New service routes left unsealed after building work
- Old fire sealant that has split or come away
- Gaps around pipes and cables through fire-resisting walls
Looking after it afterwards
How long the joints last depends on use and care. We suggest:
- Include fire stopping when you schedule refits
- Get damaged fire seals looked at promptly
- Check whether a sealant can be painted before decorating over it
- Look in service cupboards and ceiling voids from time to time
Tell other trades that the gaps have been sealed, and make sure anything they disturb is resealed with a suitable product. A lot of damaged fire stopping comes from later work.
A flagged gap shouldn’t wait for the next assessment. Get it sealed and recorded so you can show it was dealt with.
About our fire rated sealant in Colthrop
We can work through a building room by room or floor by floor, noting the locations and products as we go. That record is useful for your files and for whoever looks at the building next. If you have standard silicone or caulk in a fire-stopping gap and sealant items on a fire risk assessment action list, we can put it right, whatever the surface.
If you have holiday lets, a converted barn used for business or a community building near Colthrop, the washrooms, kitchens and any fire-rated joints need the same care as a big site.
Every job comes with a one-year guarantee.
- Where
- Colthrop (RG19, RG18)
- Wider area
- West Berkshire
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Work for landlords, hotels and businesses
If you manage several properties in or around Colthrop, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and photos by email help.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we are fully insured for the work.
How it works
Once we’re on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes anything from a few hours to several days, depending on how many gaps there are. Somewhere as small as Colthrop, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Before starting, we go through the specification or action list with you.
- We measure every gap and note what it’s in and what passes through.
- Unsuitable material such as ordinary foam or silicone is cut out and the faces cleaned.
- We fit backing where needed and apply the fire-rated sealant to depth.
- Every location is recorded with the product used.
How to prepare
- Let us know about stairs, lifts or work at height
- For indoor joints, keep the area dry beforehand if you can
- Mention any parking rules near the property
Get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work.
Related advice
Can I do it myself?
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Towns and villages near Colthrop
Also in Colthrop
When to call us in Colthrop
Door frames are a common weak spot. The gap between the frame and the wall is hidden behind the architrave, so it’s easy to leave unsealed when doors are changed.
Most people get in touch after spotting something like this:
- Damaged fire sealant left by other trades
- Cracked or shrunken fire-rated sealant
- Gaps around pipes and cables through fire-resisting walls
- Holes left by a change of layout
For landlords with property near Thatcham station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.
Comparing quotes
- What the cure time is
- The length of the guarantee
- What insurance they hold
- Whether they seal over old material or remove it
Colthrop questions
Is Colthrop within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you cover Colthrop for fire rated sealant?
Yes, Colthrop is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Do I have to be there?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
What sealant do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we are using and why.
Do you work in flats, HMOs and commercial buildings?
Yes. We regularly work in flats, HMOs, schools and offices while they’re in use and we plan access around the people using them. Early starts or out-of-hours work can be arranged where it’s needed.
What fire rating will the seal have?
Ratings and certification sit with the product’s test evidence and whoever specified the work. We apply the specified product to the manufacturer’s details and list the locations and products for you.
Can new sealant go over the old?
No. We remove every bit of old sealant first, so the new sealant bonds properly.
Fire rated sealant around Colthrop
Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, and gaps around services are often picked up there. We work to the specification you’re given, installing the product to its tested details.
For buildings such as St Mary's Church, service openings in its walls need the right fire-rated sealant, as in any building. For site and facilities teams at buildings such as Francis Baily Primary School, service openings in fire-resisting walls need checking after any refurbishment.
Colthrop is about 1 mile east of Thatcham, in West Berkshire. Jobs in Colthrop get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. 155 places in West Berkshire are on our list. There’s also a page for Reading, roughly 12 miles from Colthrop.
We cover every part of RG19 and RG18 for fire rated sealant and the streets around it. Local streets include Bath Road, Ashman Road and Fokerham Road, and we cover them all. We also cover Crookham (2 miles south-east), Hyde End (2 miles south-east), Heads Hill (2 miles south-west), Mill Green (2 miles south) and Goose Hill (3 miles south). We also work in nearby towns such as Newbury (4 miles west), Burghfield Common (8 miles east), Speenhamland (4 miles west), Hungerford (12 miles west), Spencers Wood (12 miles east) and Calcot (9 miles east).
What’s near Colthrop
Locally, jobs take us to homes and businesses close to The Swan pub and Kennet School, among other places. For rail, the closest station is Thatcham station, roughly 0.5 miles south-west of the centre. A little further out are Old Chapel Textile Centre (2.6 miles south-west) and Donnington Castle (4.6 miles west). Not far away are Thatcham Reed Beds.
Leave it or put it right?
Squirting in whichever sealant is nearest does not make a fire seal. A fire-rated product only performs as tested when it’s installed to its tested detail, which is why we match the product and the method to each gap. In a small place like Colthrop, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Doing several joints on one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. We’ll give you a clear quote for the lot.
Why choose Mr Mastic in Colthrop
- Full insurance on every job
- Experience in homes, commercial sites and hotels
- ARBOMaster approved applicator
- We leave the area clean and tidy
Take a look at what affects the cost or our reviews.
How we quote for fire rated sealant
The price is agreed before any work begins. It takes into account:
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
- How many rooms, windows or areas are involved
- The number and length of the joints
Leaving a failed joint usually makes the job bigger, not smaller. If you’re unsure, ring 0345 464 0079 or email us for an honest opinion and a quote.
What to tell us for a quote
To make quoting easier, please include:
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
- What’s wrong with the joints now
- Access, such as stairs, a lift or height
We don’t publish a price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, ring 0345 464 0079 or drop us an email.