Foxholes mastic sealing
Mastic sealing for building owners, managing agents and housing associations across Foxholes, by CSCS-carded applicators. CHAS accredited and fully insured.
- Complaints coming in block by block
- Water getting in round frames after rain
- Worn sealant at communal door frames
Mastic sealing in Foxholes
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How we handle mastic sealing in Foxholes
Different joints need different sealants. Low-modulus neutral-cure silicone suits many window perimeters and external movement joints, and MS polymer sealants stick well to many substrates and often take paint. We’ll confirm the colours available for the specified product. Site teams most often ask us about occupiers reporting cold air round windows and worn sealant at communal door frames, on communal kitchens and washrooms, communal entrances and stairwells and external wall and movement joints. Most enquiries from Foxholes start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Places the size of Foxholes usually have some housing association stock, small blocks and mixed-use buildings. Their window perimeters and external joints need renewing as the mastic ages.
Our workmanship is guaranteed for 12 months. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Location
- Foxholes (SG13)
- Wider area
- Hertfordshire
- Cover
- 12 months on our workmanship
- Quotes
- Quoted before any work starts
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Diagnose, treat, sign off
Occupied buildings need a little choreography. We sign and contain the area we are in, keep walkways clear and work section by section so the rest of the building stays in use. What matters most for a job in Foxholes is a clear list of what needs doing, so send photos of each area. You will then get a fixed price for the work.
- First comes a look at the joints and, for older buildings, the asbestos records.
- A fixed quote covers the joints, products and order of work.
- We strip out the old sealant.
- The joints are prepared and resealed with the right product.
- Buildings are completed in turn.
Preparing the site
- Clear stock, furniture or equipment away from the joints
- Flag any permit to work we’ll need
- Point out parking and an unloading spot
Getting a fixed quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photos and a few notes.
Read more
Your questions answered
Can you quote for a block close to Hertford East station?
Yes, and several blocks can go on one quote. Photos of each elevation help us quote accurately.
Can you work at a site such as Taylor Trading Estate, by Foxholes?
Yes. Estates, retail parks and business parks around Foxholes, Taylor Trading Estate among them, are all within reach. A few photographs and the unit address let us price the work.
Is it fine to apply new sealant on top of old?
No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.
Can you take on resealing for a block portfolio?
Yes, that’s exactly who this service is for. Buildings are scheduled in turn so you can plan around it.
Is mastic sealing guaranteed?
Our workmanship carries a 12-month guarantee and we hold public liability insurance.
Can you seal joints high up on a block?
We talk through access for each building when we quote. Tell us the number of storeys and whether scaffold or other access is planned and we’ll confirm the approach in the 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.
Frames, entrances and external joints in Foxholes
Foxholes lies roughly 20 miles out from central London. Managed blocks of flats are a big part of commuter-belt property. The South East is one of the drier parts of the UK. External mastic still waits for dry faces and the right temperature, while the elevations that take the most sun tend to show hardened mastic first.
Property owners at sites such as Taylor Trading Estate, 0.7 miles to the north of Foxholes, can have mastic renewed between lettings. For a school such as Wheatcroft Primary School, perimeter mastic on windows and doors is a holiday job.
Foxholes is about 1 mile east of Hertford, in Hertfordshire. We cover commercial sites throughout Foxholes, whether it’s a single job or part of a planned programme. We work across 371 places in Hertfordshire, from busy centres to rural villages. Sites around London have their own page, roughly 20 miles from Foxholes.
Work on mastic joints is covered throughout SG13. For a building on Ware Road, London Road and Fairfax Road or nearby, we can quote for mastic joints. Close to Foxholes, our area also takes in Rush Green (1 mile north-east), Hertford Heath (1 mile south-east), Hertford (1 mile west), Little Amwell (1 mile south-east) and Horns Mill (1 mile south-west). Further afield, our area takes in Stevenage (10 miles north-west), St Albans (12 miles west), Bishop's Stortford (10 miles north-east), Welwyn Garden City (6 miles west), Harpenden (13 miles west) and Hitchin (14 miles north-west).
Around Foxholes
Locally, jobs take us to sites close to Simon Balle All-Through School, The Saracens Head Public House and Hertford Regional College. Foxholes’s nearest station is Hertford East station, roughly 0.8 miles north-west. Well-known places in the area include Hertford County Hospital (1.5 miles west) and Mcmullen & Sons Brewery Museum (1.2 miles west). Not far away are King's Meads.
Signs you need mastic sealing in Foxholes
Buildings move with temperature and moisture, and every joint has to stretch and squeeze with them. If the joint or the product wasn’t suited to the movement, it splits long before it should.
These are often picked up first by site or facilities staff:
- Communal area joints that look neglected
- Open joints in brickwork or panels
- A mix of products and colours from past repairs
- Cracked, hardened mastic round windows on a block
Buildings close to stations like Hertford East station, 0.8 miles north-west of Foxholes, are often flats over shops, with frame mastic to keep sound.
What your quote should include
- Is the sealant right for the movement and the substrate?
- Can the work be phased to keep areas open?
- How they handle RAMS and site documents
- Will failed sealant be removed rather than covered?
Nearby places to Foxholes
Other services in Foxholes
What sealant work can’t fix
A few problems need another trade or a different fix, and we say so rather than covering them up:
- Masonry that has broken away beside the joint
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
- Leaks from above rather than through a joint
If you are not sure, just give us a call on 01277 525 020 or email drawings and photos and we will give you a straight answer before you book.
Surfaces we seal
- Shopfronts below residential blocks
- External wall and movement joints
- Window and door perimeters on blocks
- Communal kitchens and washrooms
- Communal entrances and stairwells
- Balcony and threshold joints
Owners, agents and contractors
Main contractors use us as their sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.
We work for building owners and managing agents on everything from one building to a spread of sites. One quote can cover more than one site, which keeps the paperwork simple.
What happens if it’s left?
Replacing mastic before water gets in is a planned job. After water has got in, there may be damp, damaged plaster or decoration to put right too, and the complaints come with it. A failed joint lets water into a building whatever its size. Catching it early means a reseal rather than repairs.
Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote, and you’ll have a fixed figure to work with.
Why choose Mastic Doctor in Foxholes
- One number for every site we cover
- A range of standard colours, depending on the product
- Health and safety: CHAS accredited
- Fixed quotes based on photographs, drawings or a visit
See what affects the cost and our accreditations.
How the quote is worked out
There’s no standard rate for sealant work, because every site is different. What we take into account:
- Whether the work must be split into stages
- The size and state of each joint
- The product specified
- Access and working height
Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
What to include in your enquiry
To price the job accurately, we need to understand the site. Send us:
- Photos of the joints, close up and from further back
- The postcode of the building
- Drawings or a marked-up plan, if available
- Any dates the work must fit around
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.