Season, surface preparation and damp decide whether paint lasts five years or starts peeling in one. Here is how to plan the job and what to ask before anyone starts work.
Painting is the one home job where the part you pay for and the part that decides the result are different things. People compare quotes on the paint. The result is decided almost entirely by what happened to the wall before the paint touched it.
That is why two houses painted in the same month with the same material can look completely different three years later.
Get the season right
In our climate there are two good windows and one bad one.
- October to March is the best period. The air is dry, the walls are dry, and temperatures are moderate enough for paint to cure properly. October and November, once the monsoon has fully cleared, are ideal — though that is also when everybody wants painting done before Diwali, so book early.
- April to mid-June is workable but not comfortable. At 40°C and above, paint on a sun-facing exterior wall dries faster than it can be laid off, which gives roller marks, brush lines and a patchy finish. If you must paint in peak summer, the exterior has to be done early morning and late afternoon, never on a wall in direct midday sun.
- Late June to September is the wrong time, and this is worth being firm about.
Why the monsoon is genuinely wrong
Paint does not simply dry, it cures, and it needs the surface underneath to be dry for that to happen. During the rains, a wall that looks dry on the surface holds a great deal of moisture inside it. Paint applied over that seals the moisture in. It then pushes back out, and you get blistering, peeling and patches within months.
High humidity also slows drying between coats, and an exterior job can be ruined by one shower a few hours after the coat went on. A contractor who offers to paint your exterior in August is either not thinking about this or is hoping you are not.
Preparation is most of the job
On an old wall, the actual painting is the small part. The preparation is the work. A proper sequence looks roughly like this:
- Scrape off all loose, flaking and chalking old paint — not just the part that is already falling
- Find and treat any damp before anything else happens
- Fill cracks and holes, and rake out and refill anything wider than a hairline rather than skimming over it
- Sand the surface smooth and dust it down
- Apply primer suited to the surface and the paint going over it
- Putty where a smooth interior finish is wanted, then sand again
- Paint the finish coats, properly spaced apart so each one cures
If someone quotes a two-day job for a whole house, they are skipping most of that list. The cheapest quote is almost always cheap because preparation has been left out, and preparation is the part you cannot see and cannot check afterwards.
Damp and efflorescence must be dealt with first
This is the single biggest reason painting fails here. After a Bihar monsoon a lot of walls are carrying moisture — from a leaking terrace, a cracked parapet, a blocked drain outlet, a plumbing leak inside the wall, or rising damp from the plinth in an older house.
The white powdery deposit you see on damp walls is efflorescence: salts carried out of the masonry by moisture moving through it. It is not dirt, and painting over it does not work. The paint has nothing solid to grip, and the salts keep coming.
The one thing not to compromise on: never let anyone paint over a damp patch, a water stain or a white salt deposit. The source of the water has to be found and stopped, the wall has to dry out properly, and only then should it be prepared and painted. Paint over damp and you will be repainting that wall within a year, and paying twice.
Finding the source usually means checking the terrace waterproofing above, the drain outlets, the external wall on the other side, and any pipe running inside that wall. Plumbing and waterproofing checks are part of our regular service list, and it is worth sorting those out before booking the painting, not during.
Interior and exterior are different jobs
Interior walls need a smooth finish and a paint that stands up to cleaning, particularly in a kitchen or a child's room. Coverage, washability and how well the finish hides an imperfect wall matter most.
Exterior walls are doing a completely different job. They face 40°C summers, heavy dust, driving monsoon rain and strong sun. An exterior wall needs a paint made for exteriors, and it needs the surfaces above it to be sound — parapets, sunshades, the underside of chajjas and the joints where a balcony meets the wall are where exterior paint always fails first, because that is where water sits.
Darker exterior shades fade faster in our sun. That is a trade-off to make knowingly rather than to discover later.
How long a job actually takes
The honest answer is that it depends on the state of the walls, but the pattern is consistent:
- A repaint over sound existing paint is the quickest, because the preparation is light
- An older house with peeling paint, cracks and patchy plaster takes considerably longer, and most of the extra time is preparation, not painting
- Any wall that needs damp treatment adds drying time, and drying time cannot be rushed or negotiated
- Exteriors depend on the weather and on access
Ask for a room-by-room or wall-by-wall schedule rather than a single figure for the whole house. If the answer is vague, the plan is vague.
Questions to ask before work starts
- What exactly is included in surface preparation, written down?
- Will primer be used, and is it suited to this surface?
- How many finish coats, and how long between them?
- How will the damp patch on that wall be dealt with before painting?
- Who moves and covers the furniture, and who cleans up at the end?
- Is the paint bought by you or by the contractor, and if by the contractor, are you being shown the sealed containers?
- What happens if it rains during an exterior job?
- Will I get a bill?
The last one matters more than people think. A written bill is what turns a conversation into an agreement. Every job we do comes with a bill, spare materials are billed at actual cost after we tell you, and current charges are published on the rate list with GST extra.
Why the cheapest quote usually costs more
A low quote has to come from somewhere. It comes from thinner preparation, fewer coats, skipping primer, diluting more than the material should be, or painting straight over problems. None of that is visible on the day the work finishes. All of it is visible in the second year.
Judge a quote by what it says about preparation, not by the number at the bottom. A quote that specifies scraping, crack filling, primer and coat spacing is telling you the contractor intends to do those things. A quote that is only a rate and a total is telling you nothing at all.
Planning around the festival season
Most people want painting finished before Diwali, with Chhath following a few days later. That makes September and October the busiest booking period of the year across Rohtas. If you are planning a full-house job, talk to someone in August so the damp work and drying time fit comfortably before the painting starts.
We take painting work across Sasaram, Dehri-on-Sone, Bikramganj, Mohania and Daudnagar, with the full list on the service areas page. To discuss a job, the contact page has the booking form and the callback comes within an hour.
Frequently asked questions
October to March is best, because the walls and the air are dry and temperatures are moderate enough for paint to cure. April to mid-June is workable if exterior work is limited to early morning and late afternoon. Avoid late June to September entirely, since monsoon moisture inside the wall causes blistering and peeling.
No. Paint applied over damp seals the moisture in, and it pushes back out as blisters and peeling within months. The source of the water has to be found and stopped first, whether it is a terrace leak, a blocked drain, a pipe inside the wall or rising damp, and then the wall has to dry fully before preparation begins.
That is efflorescence, salts carried out of the masonry by moisture moving through the wall. It is not dirt, so brushing it off and painting over it will not hold. The moisture has to be stopped and the wall dried out; otherwise the salts keep coming and the new paint loses its grip on the surface.
Because the saving has to come from somewhere, and it almost always comes from preparation: less scraping, no primer, fewer coats, over-thinned material, or painting straight over cracks and damp. None of that shows on the day the job ends. Judge a quote by what it specifies about preparation rather than by the total.
Want a hand with this?
Book a technician at home across Sasaram, Rohtas, Kaimur and Aurangabad. Prices fixed up front, a bill for every job.