Door Fitting Guide: Step-by-Step Installation (India 2026)

Fitting a door looks like a quick afternoon job, but a door that latches cleanly, swings true and stays put for twenty years is the product of a careful, ordered sequence — and the order is everything. This door fitting guide walks the full installation from a bare opening to a finished, sealed door, the way a good Indian carpenter and site engineer actually do it: set the chowkhat (frame) plumb, level and square; fix it solidly with holdfasts; grout or foam the gap; hang the leaf on three hinges; fit the lock; add the architrave; then seal and finish. A lighter overview lives at door installation guide — this page goes a step deeper, with the tolerances, the tools and the homeowner checks that separate a door that works from one that rattles. Throughout, the relevant standards are IS 4021 (timber frames), IS 4351 (steel frames) and IS 2202 (flush door shutters).

Tools and materials you need

Getting the kit ready before you start saves the most common site delay — a half-hung door waiting on a missing fastener. A homeowner supervising a carpenter should see most of this on the floor before work begins.

Keep the screws that come with the hinges and lock — they are sized for the job. Have anti-termite treatment ready if a timber frame foot will sit near ground contact, and confirm a lintel/RCC header spans the opening before anything goes in (see door lintel requirements).

Step 1 — measure and prepare the opening

Never trust a single measurement. Measure the width at top, middle and bottom and the height at both jambs and the centre, and work to the smallest reading. Check the diagonals for square, the jambs for plumb and the floor for level. The rough opening should be the frame's outer size plus roughly 10-12mm of packing gap on each side — enough to shim the frame true without forcing it. Clear away mortar snots, confirm the lintel bearing (150-200mm each side) and lay a DPC or stone/RCC block where the timber jamb foot will land. The fuller routine is in measuring for a door and door rough opening.

Step 2 — set the frame plumb, level and square

This is the ten minutes that decides whether the door behaves. Stand the frame in the opening on packers, plumb the hinge jamb first with the level (front-to-back and side-to-side), then level the head, then plumb the lock jamb to the correct clear width top, middle and bottom. Check square by measuring the diagonals — equal diagonals mean a square frame — and sight across the jambs so the frame is not twisted ("out of wind"). Shim solidly behind every future fixing point, especially at the hinge and lock heights, so tightening does not pull the jamb out of true. As a rule of thumb the tolerance to hit is the frame plumb within 1-2mm over its height with an even reveal all round.

The physics behind this matters: a leaf is a pendulum, so a hinge jamb that leans even 1-2mm makes the door self-swing open or shut. The full method is in door frame plumb, level and square.

Step 3 — fix the frame and grout the gap

With the frame true, fix it without disturbing it. Timber frames are anchored with M.S. holdfasts — flat clamps embedded in the masonry with cement concrete, three per jamb for a 2.1m frame — or, on built walls, with screws into rawl plugs. Steel frames are built into the wall and grouted solid with 1:3 cement mortar. Drive each fixing only after confirming the packer behind it is solid, then fill the gap: low-expansion PU foam on timber (high-expansion foam bows the jamb), cement mortar on steel. Pack behind the hinge and lock points especially so the jamb cannot bow inward later. The detail lives in door frame fixing methods and door frame grouting.

Step 4 — hang the leaf on three hinges

A standard leaf hangs on three hinges — roughly 200mm from the top, 250mm from the bottom, and one at mid-height. Mark the hinge positions on leaf and frame together, chisel clean mortises to the hinge-leaf depth, and screw the hinges on. Offer the leaf up, drive one screw per hinge first, then check the swing and the gaps before committing the rest. Aim for the margins below; a slab leaf that is too tight gets planed equally, no more than ~5-6mm per side, with a slight 2-3 degree bevel on the lock edge so it clears as it shuts.

Get the undercut right against the finished floor, not the bare slab — set it from door undercut clearance, and confirm the swing matches the planned door handing and swing.

Step 5 — fit the lock and latch

Most Indian doors take a mortise lock set at handle height, roughly 900-1050mm above finished floor. Mark the lock body position on the leaf edge, drill and chisel the mortise pocket, then cut the face plate flush, fit the lock and mark the strike plate on the frame so the latch lands cleanly. Test that the bolt throws fully and the door pulls up snug without slamming. Choose the lock to suit the handing established earlier.

Step 6 — architrave, then seal and finish

The architrave (timber, MDF or WPC casing, ₹40-150/rft) covers the frame-wall junction with mitred corners and hides the packing gap — fit it only after the door swings true. Then seal: paintable acrylic caulk at internal junctions, silicone for external or wet areas, and a rebate gasket or threshold seal where weather or sound matters. Finish the frame to match the leaf — prime and enamel, melamine/PU polish on timber, or laminate/veneer. Confirm the frame foot sits on a DPC and, in bathrooms, that a WPC/PVC/RCC frame and a sealed granite saddle keep water out. See architraves and door trim and sealing around door frames.

What a homeowner should check before signing off

You do not need to swing a chisel to supervise well. Stand back and run these checks: the reveal (gap) is even all round; the door stays where you leave it at any open position (if it drifts, the hinge jamb is not plumb); the latch catches first time without lifting or shoving; the undercut clears the finished floor but is not a draughty chasm; the architrave is tight and mitred; and the frame foot is on a DPC, not standing on bare wet floor. The faults to refuse are in door installation mistakes, and a final tick-list is the door installation checklist.

A quick word on what kind of door you are fitting: a prehung door arrives with the leaf already hung in its frame and is faster and truer to fit, while a slab is the leaf alone, hung on site — cheaper and more flexible but more skilled to get right. The trade-offs are in prehung vs slab doors. True door fitting is a skilled carpenter's job; the cost of doing it properly is worth budgeting, and you can estimate it with the door fitting cost estimator. For the dimensions behind every gap above, run the door clearance checker.

This page is part of the frames-and-installation cluster — see the phase pillar door frames and the cluster pillar complete door guide.

Frequently asked questions

How many hinges does a door need?

A standard leaf takes three hinges — one about 200mm from the top, one about 250mm from the bottom, and one at mid-height. Two hinges may hold a very light internal leaf, but three is the norm in India and spreads the load so the leaf does not sag or pull the screws. Heavy or tall doors may take a fourth.

Should I fit a prehung door or a slab?

A prehung door (leaf already hung in the frame) is faster, truer and more forgiving — good where the opening is reasonably square. A slab (leaf only) is cheaper and lets you match an existing frame, but hanging it well needs a skilled carpenter for the hinge mortises and gaps. See prehung vs slab doors.

Why won't my new door latch or stay shut?

Usually the frame is not plumb, level or square. A hinge jamb out of plumb makes the leaf self-swing; an out-of-level head makes the latch miss the strike; a racked frame tapers the gap so the leaf binds. Re-check the frame against the plumb/level/square method before blaming the leaf or hinges.

How big should the gap under the door be?

As a rule of thumb, 6-12mm over the finished floor — enough to clear a tile or marble step and allow ventilation and return air, with up to ~12mm for bathrooms. Set it against the finished floor, not the bare slab, or the door may scrape once flooring goes down.

Can I fit a door myself or do I need a carpenter?

A competent DIYer can hang a slab in a true existing frame, but setting a new chowkhat plumb, square and out-of-wind, fixing it with holdfasts and grouting it is genuinely skilled work. Get a carpenter for the frame and the mortises; you can confidently supervise, do the sealing, and run the homeowner checks above.

How much does door fitting cost in India?

It varies widely by city, frame material, door type and whether it is prehung or slab, so treat figures as bands rather than quotes. Use the door fitting cost estimator for an indicative range, and note 18% GST applies on hardware and joinery.