Mastic sealing for building owners and managing agents in Offham, Kent
Planning work on a mastic joint in Offham? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Failed external movement joints
- Draughts at frames across a block
- A mix of products and colours from past repairs
Mastic sealing for Offham sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
About our mastic sealing in Offham
Managing agents and housing associations normally need paperwork before anyone starts. For documents, 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, with public liability insurance. We work on communal entrances and stairwells, balcony and threshold joints and external wall and movement joints, and the usual reasons a site gets in touch are patchy repairs in mismatched sealant and estate-wide sealant that is simply worn out. Most enquiries from Offham start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
Owners and agents with buildings around smaller places such as Offham tend to manage small terraces of association properties, converted barns and commercial units. Frame and wall-joint mastic on all of them ages and hardens.
Every job is signed off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.
- Where
- Offham (ME19)
- Region
- Kent
- Cover
- A 12-month guarantee
- Price
- Quoted before any work starts
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
For managing agents and facilities managers
CHAS accredited and a Constructionline member, we’re straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.
Hospitality, education, healthcare, office and retail clients come to us directly as well. The work is planned around how the building runs, so the building keeps working while we do.
When to call us in Offham
Sunlight and weather break mastic down over time. The surface chalks, the body stiffens and cracks appear, especially on south and west faces.
Any of the following is a good reason to get the joints checked over:
- Damaged joints in communal entrances and corridors
- Cracked, hardened mastic round windows on a block
- No planned programme for sealant
- Leaks at window and door perimeters
For a school such as Offham Primary School, perimeter mastic on windows and doors is a holiday job.
What your quote should include
- How they handle RAMS and site documents
- Which product they’ll use, and why it suits the joint
- Their public liability cover
- Will CSCS-carded applicators be on site?
Frames, entrances and external joints in Offham
Central London is about 25 miles from Offham. Managed blocks of flats are a big part of commuter-belt property. Offham 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 normally where frame mastic ages first.
Historic properties like Old Soar Manor, 3.1 miles to the south-west of Offham, show the age of some local stock, where frame mastic must suit soft brick or stone. Buildings close to stations like West Malling station (1.9 miles east of Offham) are often flats over shops, with frame mastic to keep sound.
Offham is about 7 miles west of Maidstone, in Kent. Offham sits inside our coverage and the rest of Kent, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Across Kent, 931 places are covered, Offham among them. London is covered too, around 25 miles from Offham.
Business premises anywhere in ME19 are within our area for mastic joints. Streets here include Church Road, Pepingstraw Close and Teston Road, and sites on any of them can send details for a fixed quote. Close to Offham, our area also takes in Wrotham Heath (1 mile west), Comp (2 miles west), Kent Street (2 miles south), New Pound (2 miles south) and Herne Pound (2 miles south). Further afield, our area takes in Maidstone (7 miles east), Dartford (12 miles north-west), Sevenoaks (8 miles west), Royal Tunbridge Wells (12 miles south-west), Gravesend (10 miles north) and Tonbridge (8 miles south-west).
What’s near Offham
Locally, jobs take us to sites close to King's Arms Public House and Manor Park Country Park and the streets around them. Offham’s nearest station is West Malling station, roughly 1.9 miles east. A little further out are Leybourne Castle (2.2 miles north-east) and Maidstone Hospital (4.8 miles east).
Questions about Offham
Is Offham off your patch?
Not at all. Offham is within our area. Our area covers London and the South East counties. Send photographs and a list of what needs doing, and we will plan the job to need as few trips as possible.
Do you work for managing agents with blocks near West Malling station?
Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Photos of each elevation help us quote accurately.
Can you reseal a whole block or estate?
Block-wide and estate programmes are common. The quote can be split however suits your budgeting.
How long will the new sealant last?
There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.
Does the weather affect the work?
For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Inside work is seldom held up.
What guarantee do you give on resealing?
A 12-month guarantee covers our work. It covers our workmanship, not later building movement, damage or frame failures.
What about access for upper-floor joints?
It depends on the building. We agree access with you at quote stage so there are no surprises.
Places near Offham
More services for Offham
Quoting for work in Offham
We price every job individually. The main factors are:
- How much there is to seal
- How accessible the joints are
- Which sealant the job calls for
- How much existing material needs removing
Access can matter as much as the joints themselves: 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 photos plus some basic facts will normally do. Please tell us:
- How the joints are reached, and at what height
- What the building is and how it’s used
- The asbestos register, for older buildings
- When you need the work done
Photos, drawings or a schedule of the joints and a fixed quote comes back to you. If the job needs a look first, we will arrange a site visit.
What happens if it’s left?
Replacing mastic before water gets in is a planned job. Once water has tracked in, the repair list grows, and the complaints come with it. For buildings around smaller places like Offham, water damage can go unnoticed for longer, especially where a building isn’t used daily, which gives a failed joint time to do damage. Resealing early avoids that.
Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you will have a fixed figure to work with.
Why choose Mastic Doctor in Offham
- Clear, fixed quotes
- One contact handling all your sites
- Specification-led, product-correct work
- Health and safety: CHAS accredited
See our cost guide and how we’re accredited.
What the job involves on each surface
Communal areas
Communal areas stay in use while we work. We work in sections so access is never blocked.
Commercial and mixed-use buildings
Tenants in commercial buildings need to keep trading so the work is phased.
Our process
Diagnose, treat, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. If others near Offham need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.
- Each block or building is walked and the failed joints recorded with the likely cause.
- You get a fixed quote, priced per building where that helps your budgeting.
- Dates, areas and access are agreed so residents or tenants can be told in advance.
- Old sealant is stripped and each face prepared back to firm material.
- Backing rod and primer go in as the joint requires, then the new bead is placed and tooled.
- Each building is checked on completion and the work carries our 12-month guarantee.
What we need from you
- Warn occupants and staff about the work
- Tell us which areas need to stay in use
- Arrange parking or a loading space
Ask for a quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call the office on 01277 525 020 or email drawings and photos with what you know.