Great Dunmow mastic sealing
Mastic sealing in Great Dunmow, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.
- Communal area joints that look neglected
- Failed external movement joints
- Complaints coming in block by block
Need mastic sealing in Great Dunmow?
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
What we can’t put right
Part of a good diagnosis is knowing where sealant stops. You will hear from us if the cause turns out to be one of these:
- Leaks through the frame itself rather than the perimeter
- Glazing that needs replacing
- Asbestos-containing sealant, which we don’t remove
Not sure which it is? You can give us a call on 01277 525 020 or email us and we will tell you honestly before you book.
What we seal
- Window and door perimeters on blocks
- Communal entrances and stairwells
- Balcony and threshold joints
- Shopfronts below residential blocks
- Communal kitchens and washrooms
- External wall and movement joints
Mastic sealing in Great Dunmow
Across Great Dunmow and the rest of Essex, we work the same way: you send details, we return a fixed quote, the joints are resealed and the 12-month guarantee follows. Addresses, photos of typical joints and a rough idea of quantities let us give a quick quote, and site visits can be arranged. Most enquiries involve occupiers reporting cold air round windows and brittle perimeter mastic across a building, on window and door perimeters on blocks, balcony and threshold joints and external wall and movement joints. Searching for sealant specialists in Great Dunmow? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.
Owners with buildings around smaller places like Great Dunmow often group mastic work so one visit covers several properties. One quote can cover a whole list of addresses.
The 12-month guarantee covers our workmanship: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Where
- Great Dunmow (CM6)
- Wider area
- Essex
- Cover
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Also near Great Dunmow
Also in Great Dunmow
From enquiry to sign-off
Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. The work itself typically takes a few days for most blocks, with larger programmes scheduled building by building, and we clear our waste as we work. For a job in Great Dunmow, the main thing is a clear picture of the work, so send photographs of each area. A fixed quote follows.
- We inspect each building and record the joints that have failed.
- You get a fixed quote, per block or for the whole programme.
- We agree the programme and dates with you.
- Old mastic is removed and the joint faces prepared.
- Joints are resealed and tooled.
- Each building is checked and signed off with the 12-month guarantee.
Getting the site ready
- Let building users know which areas are affected
- Confirm the product named in the specification
- Make sure the joints can be reached
Quotes
Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we’ll return a fixed quote you can plan around. For a chat about it beforehand, phone 01277 525 020 or email the details over.
Related advice
Building owners, agents and FMs in Great Dunmow
As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.
Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, with each stage agreed with your site contact.
Planned mastic for Great Dunmow portfolios
Great Dunmow sits in one of the drier corners of the country, the South East. Outside mastic still needs a dry joint and the right temperature, and elevations facing the sun and the prevailing weather are typically where frame mastic ages first. Great Dunmow lies roughly 32 miles out from central London. Within reach of London, blocks run by agents and associations are common around stations.
Blocks of flats and mixed-use buildings often cluster around stations such as Stansted Airport station, 4.3 miles to the west of Great Dunmow, and their window and balcony mastic tends to age at the same rate across a building. Churches, halls and community buildings such as Parish Church of St Mary the Virgin are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time. If your remit includes a building such as Dunmow St Mary's Primary School, frame and door mastic can be programmed for the holidays.
Great Dunmow is about 9 miles west of Braintree, in Essex. Looking for mastic sealing in Great Dunmow? We can help. Our Essex coverage takes in 644 places, from busy centres to rural villages. For work in that direction, see our London page (32 miles or so).
We take on mastic joints across the CM6 postcode area, for business premises of every kind. Among the streets we cover are Market Place, High Street and Station Road. Being close to the B1008 and B1057, Great Dunmow is easy to get to with materials and equipment. Nearby places we also cover include Church End (1 mile north-east), Little Easton (2 miles north-west), Barnston (2 miles south-east), High Roding (3 miles south-west) and Great Canfield (3 miles south-west). Further afield, our area takes in Chelmsford (11 miles south-east), Braintree (9 miles east), Harlow (13 miles south-west), Witham (13 miles south-east), Saffron Walden (11 miles north-west) and Halstead (13 miles east).
Around Great Dunmow
Around Great Dunmow, our work takes us to commercial buildings near Helena Romanes School and Sixth Form Centre and The Chequers Public House, among other places. For rail, the closest station is Stansted Airport station, roughly 4.3 miles west of the centre. Nearby you’ll also find Little Easton Moat (1.6 miles north-west).
Your questions answered
Will you take on a block within reach of Stansted Airport station?
Yes, we work for agents, landlords and housing associations with blocks of every size. Give us the building’s details and say how residents are notified, and we’ll quote and plan to suit.
Does your area include sites such as Station Yard Industrial Park, near Great Dunmow?
Yes. Our area takes in Great Dunmow and its surroundings, with estates and business parks such as Station Yard Industrial Park included. To start, just give us a call on 01277 525 020 or send photos by email with the unit, the joints involved and your access times.
Is Great Dunmow in your area?
Yes. We cover Great Dunmow, and the simplest way to start is to ring 01277 525 020 or send photos by email.
How long will the new sealant last?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Treat them as maintenance items and inspect them regularly.
Will residents or tenants be disturbed?
The work is planned around occupiers. Dates and areas are agreed with you so residents or tenants can be told and communal access is kept open.
Is mastic sealing guaranteed?
There is a 12-month guarantee on our workmanship and we hold public liability insurance.
Does weather matter for sealant work?
It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.
What the job involves on each surface
Tenement and older buildings
Some old mastics in pre-2000 buildings contain asbestos and the register is checked before anything is disturbed. If it’s suspected, work stops until it’s tested.
Estate-wide resealing programmes
Priority order can follow condition, complaints or your maintenance plan. You get one fixed quote per building or for the whole estate.
Should maintenance staff do it?
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.
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.
Aftercare for building managers
Your facilities or cleaning team can help the joints last. Pass these on to them:
- Make mastic part of routine maintenance checks
- Protect low-level joints in entrances
- List the paperwork your organisation requires when you send details
- Encourage occupiers to report problems at frames
Encourage occupiers to report water or draughts at frames. Early reports catch failures before damage spreads.
The longer failed joints are left, the more likely the substrate edges break up. Then the edges may need repairing first.