Expansion joint sealing in Chesham Bois
Expansion and movement joint sealing in walls, decks and floors across Chesham Bois, by CSCS-carded applicators. Fully insured and CHAS accredited.
- New sealant over old, now failing
- Damp inside where a wall movement joint has failed
- Water dripping through deck or ramp joints
Expansion joint sealing near Chesham Bois
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Cost factors for movement joints
There’s no standard rate for sealant work, because every site is different. What we look at:
- The total length or number of joints
- Distance, for remote addresses
- Removal of failed or old sealant
- Access and working height
Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.
Before you send an enquiry
A few photographs plus some basic facts will normally do. Please tell us:
- Access details, including height
- Whether the building will be occupied during the work
- Drawings or a marked-up plan, if available
- The postcode of the building
Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. For a chat about it beforehand, call 01277 525 020 or email drawings and photos.
Expansion joint sealing for commercial buildings in Chesham Bois
Joints in car park decks and ramps are among the hardest-working in any building. Tyres load the edges, and de-icing salts and water work into any gap. We reseal deck and ramp joints with a trafficable sealant chosen for the movement, phasing bays so the car park can stay in use. We work on podiums and floor movement joints, blockwork control joints and precast concrete panel joints, and the failures we are asked to look at most are rain penetration at brick or block movement joints and arrises breaking up along floor joints. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Chesham Bois, that means joint design, primers and backing rod as standard.
In a smaller place such as Chesham Bois, floor and movement joints are often in agricultural and rural business units, schools and the odd small industrial yard. Their slabs and walls still need movement joints that work.
We stand behind the joints we seal with a 12-month guarantee. That covers our preparation and application.
- Location
- Chesham Bois (HP6, HP5)
- Wider area
- Buckinghamshire
- Cover
- 12 months on our workmanship
- Quote
- A fixed quote before we start
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
How a job runs
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Joint faces are cleaned back to sound, dry surfaces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. For a site in Chesham Bois, we plan so the whole job is done in one go where possible. Clear photographs and measurements help us bring the right products.
- We look at the joints, their width and how they’ve failed.
- Next, we fix a price and confirm the sealant we propose for the movement.
- Old sealant and filler are cut out and the joint faces cleaned back to sound material, and we tell you if any edges need repairing first.
- Backing rod goes in at the right depth, or bond-breaker tape where the joint is shallow.
- Primer goes on where the manufacturer specifies it, followed by the sealant, which is then tooled off.
- Finished joints are checked and backed by our 12-month guarantee.
Preparing the site
- Point out any areas we must not close
- Share the asbestos register for older buildings
- Arrange parking or a loading space
Get a fixed quote
Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we’ll arrange a site visit.
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Building owners, agents and FMs in Chesham Bois
Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.
Hotels, schools, healthcare sites, offices and retail units come to us directly as well. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.
Do you need expansion joint sealing in Chesham Bois?
The edges of the material can fail rather than the sealant. If the edge of the joint is friable, the bond fails with it so edge repair has to come before resealing.
Any of the following is a good reason to get the joints checked over:
- Expansion joints filled with dirt and stones
- Water getting into the wall through a failed joint
- Sealant pulling off the joint face
- Movement joints with split or torn sealant
A campus such as Buckinghamshire New University (to the west of Chesham Bois) has long runs of movement joint in its buildings, decks and paving.
What to look for in a quote
- How long is the guarantee, and what does it include?
- Are they CHAS accredited or on Constructionline?
- Who will actually carry out the work
- Which product they’ll use, and why it suits the joint
What sealant work can’t fix
Part of a good diagnosis is knowing where sealant stops. You will hear from us if the cause turns out to be any of the following:
- Changing the joint layout or spacing of a structure
- Crumbling edges that would give a new bead nothing sound to grip
- Failed waterproofing membranes on podiums, roofs or decks (a waterproofing specialist’s job)
Not sure which it is? You can speak to us on 01277 525 020 or email drawings and photos and we will tell you honestly before you book.
Surfaces we seal
- Podiums and floor movement joints
- Cladding panel joints
- Car park decks and ramps
- Precast concrete panel joints
- Brickwork movement joints
- Blockwork control joints
Why deal with it now?
Closing a car park for a reseal is rarely an option. Work can be planned so parts of the deck stay open without shutting the whole car park. Tell us what has to stay open and we will plan around it. Sealant hardens, cracks and loses grip with age, UV and movement. Replacing it before it fails keeps water out.
What a job costs comes down to the quantity of joints, how much old material needs removing and the access. Call for a quote when you are ready.
Why choose Mastic Doctor in Chesham Bois
- Workmanship guaranteed for 12 months
- Work carried out by CSCS-carded applicators
- Colours confirmed for the specified product
- Work to your specification and the manufacturer’s guidance
Take a look at what affects the cost and our accreditations.
Also near Chesham Bois
More services for Chesham Bois
Where floor joints take the most wear near Chesham Bois
Less than 3 miles from Chesham Bois there are at least three named estates and business parks. Floors, loading bays and yards on sites like these are where floor and movement joints work hardest. At about 25 miles from central London, Chesham Bois is within reach of the capital. Warehousing clusters around the motorways that ring and radiate from London.
For an occupier at a site such as Corinium Industrial Estate (1.1 miles south-east of Chesham Bois), the joints at loading doors and dock levellers typically see the hardest wear. At places like Waterside Business Park, which lies north of Chesham Bois, joints are sealed a section at a time so operations carry on.
Chesham Bois is about 1 mile north of Amersham, in Buckinghamshire. We cover Chesham Bois, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. We work across 308 places in Buckinghamshire. Our Reading page has more on work in that area (23 miles or so).
Business premises anywhere in HP6 and HP5 are within our area. Buildings on Bois Lane, Green Lane and North Road are within our area. Close to Chesham Bois, our area also takes in Amersham (1 mile south), Amersham on the Hill (1 mile south), Waterside (1 mile north), Hyde Heath (2 miles west) and Woodrow (3 miles south-west). Bigger towns within reach include Aylesbury (13 miles north-west), High Wycombe (7 miles south-west), Marlow (11 miles south-west), Beaconsfield (6 miles south), Chalfont St Peter (6 miles south) and Elmhurst (13 miles north-west).
Around Chesham Bois
Recent enquiries here include premises near Dr Challoner's Grammar School, The Boot and Slipper pub and Home Tuition Service. The closest station to Chesham Bois is Amersham station, roughly 0.8 miles south. A little further out are Amersham Fair Organ Museum (0.6 miles south-east) and Amersham Hospital (1.7 miles south-west). Not far away are Sands Bank.
Your questions answered
Is a smaller place like Chesham Bois outside your area?
Not at all. Chesham Bois is within our area. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.
Does your area include sites such as Corinium Industrial Estate, near Chesham Bois?
Yes. Our area takes in Chesham Bois and its surroundings, with estates and business parks such as Corinium Industrial Estate included. Photos and a short description are enough for a first look.
Is it fine to apply new sealant on top of old?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
How do you choose the sealant?
Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
What will the job cost?
That depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a quote.
Can you handle several sites?
Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.
Can you follow the specification on our project?
Yes. Send it with your enquiry, and the quote will be based on it, flagging anything that needs clarifying.