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

Expansion and movement joint sealing in Three Mile Cross, Wokingham

Our CSCS-carded applicators take on expansion and movement joint sealing in walls, decks and floors in Three Mile Cross. Send details for a fixed quote.

  • Joints packed with grit and debris
  • Water dripping through deck or ramp joints
  • New sealant over old, now failing
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
Constructionline member
£5m public liability

Expansion joint sealing near Three Mile Cross

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

Diagnose, treat, sign off

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 the sealant is tooled off neatly. For a building around Three Mile Cross, tell us how to find it and who will meet us. Add it to your enquiry and we will build it into the plan.

  1. First, the joints are inspected for width, movement and the type of failure.
  2. A fixed quote follows, naming the sealant and its movement class.
  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. Where the maker calls for primer, it’s applied first, then the bead goes in and is tooled to a concave finish.
  6. Each joint is inspected and handed over with our 12-month guarantee.

Getting the site ready

  • Agree which areas must stay open
  • Share your working hours and any access restrictions
  • Point out parking and an unloading spot

Request a quote

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. If you have questions first, phone 01277 525 020 or email the details over.

Ask for a quote

Related advice

Expansion joint sealing for commercial buildings in Three Mile Cross

Mastic Doctor has sealed movement joints since 2005, for main contractors, FMs, managing agents and building owners. Our applicators are CSCS-carded, we are CHAS accredited and a Constructionline member, and we carry five million pounds of public liability insurance. Each job is backed by a 12-month guarantee on the workmanship. The enquiries we see most involve previous reseals laid over old sealant and spalled or broken joint edges in floors and decks, on car park decks and ramps, precast concrete panel joints and blockwork control joints. Searching for sealant specialists in Three Mile Cross? Mastic Doctor has worked for contractors, FMs and building owners since 2005.

Around smaller places such as Three Mile Cross, 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.

Every job we finish is backed by a 12-month workmanship guarantee. If a joint we sealed fails because of how it was installed, we come back and put it right.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Three Mile Cross (RG7)
Wider area
Wokingham
Cover
12 months on every job
Quotes
Fixed quote, scope in writing
Phone
01277 525 020
Page updated
3 November 2026

General trades versus a specialist

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong normally costs more in the end than doing them right.

Looking after the joints

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

  • Inspect movement joints alongside other routine building checks
  • Keep racking legs and heavy point loads off floor joints
  • Keep traffic off new joints until the cure time is up
  • Keep stones and debris out of open joint lines

Debris does more harm to joint sealant than most people realise. Grit trodden or driven into the joint works at the surface until it tears, especially on car park decks and warehouse floors. Regular sweeping keeps joint lines clear.

Floor joints with failed fillers break up quickly under wheels. Damaged edges make the floor rough and wear wheels faster. Sealing early protects the edges.

Where floor joints take the most wear near Three Mile Cross

Three Mile Cross has at least three named business or industrial parks inside a 3-mile radius. Sites like these are full of saw-cut floor joints, yard slabs and car park joints. Three Mile Cross sits in one of the drier corners of the country, the South East. External slab and deck joints still need a dry, clean joint to seal, while winter salting gets into any joint left open.

For estates staff at a university like University of Reading - Whiteknights Campus (2.7 miles north-east of Three Mile Cross), building and paving joints are part of the planned maintenance list. Office parks like Reading International Business Park (0.7 miles north of Three Mile Cross) have decks, ramps and clad elevations whose joints take movement every day. At a retail site such as Reading Gate Retail Park, 1.3 miles north of Three Mile Cross, trolleys, cages and cars run over floor and slab joints all day.

Three Mile Cross is about 3 miles south of Reading, in Wokingham. Our applicators travel to Three Mile Cross for work on movement joints, handled exactly as we handle every other area. Across Wokingham, 42 places are covered, including Three Mile Cross.

We cover the RG7 postcode districts for movement joints. Buildings on Dairy Grove, Basingstoke Road and Buttermilk Grove are within our area. Nearby places we also cover include Ryeish Green (1 mile south-east), Great Lea Common (1 mile north-west), Whitley Wood (1 mile north-east), Shinfield (1 mile east) and Green Park (2 miles north-west). Further afield, our area takes in Wokingham (5 miles east), Woodley (5 miles north-east), Earley (3 miles north-east), Crowthorne (8 miles east), Lower Earley (3 miles north-east) and Winnersh (4 miles north-east).

Near you in Three Mile Cross

We work on buildings around Ryeish Green School, Shinfield Infant and Nursery School and Pearman's Copse, among other places. The nearest railway station is Reading Green Park station, roughly 2 miles north-west of the centre. A little further out are Berkshire Medical Heritage Centre Museum (3.2 miles north) and The Oracle (3.3 miles north). For a walk, there’s Fobney Island Wetland Reserve and Longwater.

Map of Three Mile Cross © OpenStreetMap contributors

How the job changes by surface

Joints between different materials

Different materials meeting at a joint rarely move in step. We choose a sealant that grips both faces priming where the maker calls for it.

Car park decks and ramps

Failed deck joints often show as leaks on the level below. The old seal comes out, the edges are prepared and the joint resealed flagging broken edges along the way.

Why it’s worth doing now in Three Mile Cross

Sealing over a failed movement joint is a common shortcut. A bead over the old seal can’t bond or flex and soon lets go. Full removal and preparation is in every quote. Around Three Mile Cross, it’s better to renew all the failing joints at once, rather than one at a time. Photos of every joint help us quote for the whole job.

The price depends on the quantity of joints, what has to come out first and the access. Call for a fixed quote once you have the details.

Why clients in Three Mile Cross choose us

  • Sealing commercial buildings since 2005
  • Colours chosen to suit frames, cladding or finishes where possible
  • Products installed to the manufacturer’s instructions
  • Constructionline member for supplier checks

Read how commercial sealant jobs are priced and how we’re accredited.

For managing agents and facilities managers

CHAS accredited and a Constructionline member, we make supplier vetting simple. We’re fully insured, and our insurance certificate can go with the quote.

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Three Mile Cross can form part of a wider programme.

FAQs: Three Mile Cross

Do you take on work at healthcare sites like Berkshire Independent Hospital?

Yes. Healthcare sites are among the places we work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Is Three Mile Cross too small for you to travel to?

Not at all. Three Mile Cross is within our area. 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.

Can you seal joints in cold or wet weather?

Sealing onto a damp surface leads to adhesion failure so we’d rather rearrange than seal in the rain. The work is simply moved to the next suitable day.

Will your applicators have CSCS cards?

Yes. If you need card details for site access, let us know and we’ll send them with the quote.

Do you seal on top of existing sealant?

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, since fresh sealant will not bond reliably to aged material.

Will you quote for a small job?

Small jobs are welcome alongside larger packages. Send details for a fixed quote.

Can one quote cover more than one building?

Yes. A group of buildings can go on one quote, and you deal with one contact throughout.

Accreditations

Trusted. Accredited. Insured.