The Mastic Doctor team standing beside their branded vans outside an office building
Hampshire · England

Sheet expansion joint sealing

Expansion and movement joint sealing in walls, decks and floors in Sheet and across Hampshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • New sealant over old, now failing
  • Rain penetration at brick or block movement joints
  • Expansion joints split through the centre of the bead
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Expansion joint sealing for businesses in Sheet

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Expansion joint sealing for commercial buildings in Sheet

For movement joints in Sheet, photos and approximate lengths are the best start. We’ll come and look where photos don’t show enough, then send a fixed quote that names the sealant. To discuss the joints first, give us a call on 01277 525 020 or email the details over. Site teams most often ask us about damp inside where a wall movement joint has failed and previous reseals laid over old sealant, across podiums and floor movement joints, cladding panel joints and blockwork control joints. Facilities teams, main contractors and managing agents in Sheet tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Around smaller places such as Sheet, floor joints are often in barns and farm buildings turned into workshops, stores and offices. Whether it’s a farm store turned workshop or a storage unit, the joints need a product that suits the traffic.

What our 12-month guarantee covers is the way we did the job: 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
Sheet (GU32, GU31)
Region
Hampshire
Cover
12 months on our workmanship
Quotes
Fixed quote, scope in writing
Phone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

What we can’t put right

Our job is the joint, not everything around it. On its own, sealant can’t deal with:

  • Proprietary pre-formed expansion joint systems
  • Joints too narrow for the movement, which need redesigning by the engineer
  • Waterproofing layers buried beneath the sealant

Not sure which it is? You can call the office on 01277 525 020 or email drawings and photos and we will tell you honestly before you book.

Surfaces we seal

  • Blockwork control joints
  • Podiums and floor movement joints
  • Brickwork movement joints
  • Car park decks and ramps
  • Cladding panel joints
  • Precast concrete panel joints

After the work

Keep the joints in good shape with a few simple steps:

  • Check joints after long freezing spells
  • Put movement joints on the planned maintenance inspection round
  • Brief car park operatives to protect joint lines during winter clearance
  • Report split or peeling joint sealant early

Add every elevation, deck and floor joint to your inspection round. A periodic look picks up tears and lifting before water gets in. If anything looks wrong, ring 01277 525 020 or use the quote form with photos.

Unsupported floor joint edges spall under forklift and pallet-truck wheels. Damaged edges make the floor rough and wear wheels faster, and the damage spreads along the joint. Sealing early protects the edges.

Commercial clients in Sheet

We work for building owners and managing agents on sealant work across single buildings or whole portfolios. Several sites can go on one quote, which keeps the paperwork simple.

As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.

Doing it in-house

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

FAQs: Sheet

Can you work on a hospital site such as Petersfield Hospital?

Yes, hospitals are one of the sectors we cover. Each area is agreed with the ward or department and the estates team in advance.

Is Sheet off your patch?

No. Small places get the same service as large ones. We cover Greater London and the counties of the South East. We plan jobs in smaller places so return trips are kept to a minimum.

How long do sealant joints last?

There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.

What’s the quickest route to a quote?

You can use the quote form on this site; alternatively, phone 01277 525 020 or email us. Include photos or drawings if you have them.

Can you seal joints in cold or wet weather?

Weather matters for any external joint. Indoor joints can typically carry on regardless.

How soon can the area be used again?

The product and site conditions decide that. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.

Are you CHAS accredited and on Constructionline?

Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.

What we’re called out for in Sheet

Sealant peeling cleanly off one side is an adhesion failure. Poor preparation, a skipped primer, or sealant bonded to the back of the joint are typical reasons.

Common reasons buildings call us in:

  • Joints packed with grit and debris
  • Hardened, cracked sealant on exposed facades
  • Spalled or broken joint edges in floors and decks
  • Sealant pulling off the joint face

Schools like Sheet Primary School often have long brick elevations with movement joints that age quietly.

What your quote should include

  • Whether their applicators hold CSCS cards
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • Can the work be phased to keep areas open?
  • Whether primer will be used where the manufacturer specifies it

Our contractor checklist

Slabs, ramps and loading bays in Sheet

Rainfall across the South East, Sheet included, is lower than in many parts of the UK. Outside joints in yards and car parks still have to be dry before sealing, and winter de-icing salt on car parks and ramps works into any open joint. Central London is about 49 miles from Sheet. The roads out of London are lined with trade parks and distribution sheds.

For an occupier at a site such as Upper Adhurst Industrial Park, 1 mile to the north-east of Sheet, the joints at loading doors and dock levellers typically see the hardest wear. Hospital campuses such as Petersfield Hospital (to the south-west of Sheet) grow in stages, leaving movement joints wherever new blocks meet old.

Sheet is about 1 mile north-east of Petersfield, in Hampshire. Across the GU32 postcode area, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. 723 places across Hampshire fall within our area, Sheet among them. Sites around Portsmouth have their own page, about 16 miles away.

Anyone looking for expansion joint sealing in GU32 and GU31 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. For a building on Mill Lane, Village Street and Farnham Road or nearby, send details and we will quote for movement joints. Just outside Sheet, we also work in Petersfield (1 mile south-west), Steep (1 mile north-west), Steep Marsh (1 mile north-west), Stroud (2 miles west) and Oakshott (2 miles north-west). A short drive away, we cover Havant (11 miles south), Horndean (8 miles south-west), Alton (10 miles north), Waterlooville (10 miles south-west), Purbrook (11 miles south-west) and Bordon (7 miles north).

Landmarks near Sheet

Around Sheet, our work takes us to commercial buildings near The Queens Head pub, Churcher's College and The Petersfield School and the streets around them. For rail, the closest station is Petersfield station, about 1.1 miles south-west. A little further out are Petersfield Community Hospital (1.3 miles south-west) and Bear Museum (1.1 miles south-west). Green spaces nearby include Liss Riverside Railway Walk South and Wheatham Hill.

Map of Sheet © OpenStreetMap contributors

How a job runs

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 normally takes a short visit for a handful of joints, or several days or more for a car park deck or long runs of facade joints, and our waste is bagged and taken away as we go. Jobs in and around smaller places like Sheet are usually planned as a single visit, so photos and measurements up front really help. Then the right materials arrive with us.

  1. We look at the joints, their width and how they’ve failed.
  2. You get a fixed quote with the product and its movement capability stated.
  3. Old sealant and filler are cut out and the joint faces cleaned back to sound material.
  4. Closed-cell backing rod is set to depth, or bond-breaker tape in shallow joints.
  5. After any primer the maker requires, the bead is applied and tooled so it grips two sides only.
  6. Each joint is inspected and handed over with our 12-month guarantee.

Preparing the site

  • Send asbestos survey details if the building is pre-2000
  • Tell us your opening times and when work is allowed
  • Arrange parking or a loading space

Ask for a quote

Need a figure for a tender or a budget? We’ll quote against your scope and drawings that you can work with. For a chat about it beforehand, give us a call on 01277 525 020 or email drawings and photos.

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Accreditations

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