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In addition to additional square meters, a veranda brings an added value to the house. For it to be a real living space, all aspects of the project must be carefully thought out.

Tips for buying and installing an aluminum conservatory

Necessary material

Difficulty: 4/4
Cost: € 1,400 / m2
Time: 3 days approximately (with two, except earthworks and carcass work)
  • spirit level,
  • laser level,
  • screwdriver,
  • clamps,
  • tool to unfold,
  • syringe gun for sealant cartridge,
  • perforator, grinder Ø 125 mm,
  • glazier's cupping,
  • locksmith tools,
  • stepladders...
  • Sections, roof panels, glazing and other components of the veranda (glazing joints, etc.)
  • Joint bottom
  • Silicone sealants (colorless, red, black...)
  • Bituminous aluminum strip (cold-applied)
  • Stainless steel screws

Even largely glazed and fully open to the rest of the house, a veranda is a volume apart that requires administrative procedures identical to those of a traditional extension: prior declaration or building permit depending on your situation.

To ask his veranda...

A veranda usually leans against an existing home and presents specific difficulties of implementation: sealing at the junction with the house and risk of tillage causing cracks.
Talking to a professional (recognized and with similar references of projects) offers a wide choice in terms of geometries and materials, even if aluminum is largely predominant today.
Delegate also benefits from a ten-year guarantee and a reduced rate VAT if the work leads, on the one hand, to an increase of the floor area not exceeding 9 m2 and, on the other hand, to an increase of the floor area of ​​the existing building less than or equal to 10%.

... or put your own veranda?

The prices of kits sold on the Internet are attractive (for example, less than 500 € / m2 for an entry-level PVC model).
With this formula, the possibilities of personalization (colors, geometries and types of glazing...) are also more limited.
And pay attention to the ancillary costs, never included in the kits: materials necessary for the slab of reinforced concrete and the walls which must serve as support to the whole, floor covering, heating, lighting...

The technical choices of the extension project

orientation of a veranda

Oriented to the east, this veranda in thermolacquered aluminum sees its temperature rise quickly in the morning in summer.

  • On the other hand, it is naturally protected from the overheating that affects the south and west exposures, especially as it opens on all three sides and its roof is largely composed of opaque insulation panels.
  • Only roof surfaces near the house are equipped with laminated double glazing (6/12 / 33.2).
  • The walls use double glazing type 4/16/4 ITR (reinforced thermal insulation) and solid plinths.
  • This composition is found both in the form of sliding openings (three leaves in the front and two laterally) and fixed walls.
  • They form the south-east and north-east corners of the structure, incorporating respectively a low air inlet and an outlet at the top.
  • The volume of the veranda remains separate from the house thanks to the original French windows, kept without their shutters.

What floor for a veranda?

What floor for a veranda?

The floor supporting the veranda must be compact and stable.
Depending on the nature of the soil, foundations may be needed.
Here a hedgehog was made, then a reinforced slab 10 cm thick and finally a screed to stick the tiles.

Assembly of sleepers

foam joints under transoms dormant porch

  • Glue the foam joints under the sleeper rails.

laying ties for connecting the sleepers

  • Slide the assembly brackets at the end of the cross members.
  • Apply silicone sealant to the mating surfaces.

to assemble the equerres of sleepers sleepers

  • Present the amounts of sleepers at the end of the sleepers.
  • Insert the assembly screws and tighten them into the brackets in place.
  • Then wipe down the mastic.

maintain the façade frame when assembling a veranda

  • Assemble the fixed frame corresponding to the front facade.
  • Bridle against a stepladder with a clamp. It will thus stand up time to add the side frames.

stick the intermediate amounts of the veranda

  • Install the adhesive joints on the intermediate posts (integrating the gutter runs).

screw the frame of a transom

  • Present them against the side frames and screw them on both sides of the frames.

Installation of the gutters

install the gutters of a veranda

  • Put enough caulk to seal at the end of the gutters that end flush with the pinion.

close the end of a gutter

  • Screw the plates (heels) that close their ends.

to assemble the gutters of a veranda

  • The front and corner gutters are assembled at 45°.
  • Insert the assembly brackets into the central chamber of the front gutter.
  • Screw at an angle and then chew the heads.

to fit the gutters of the veranda

  • Fit the side gutters firmly onto the mounting brackets.
  • Press a punch in one of the holes to hold the profiles for the first screw.

align and screw the gutters of the veranda

  • Present the front gutter and its angles secured above the dormant.
  • Align the overlapping profiles, clamp them, check the levels, then screw them.

assemble the profiles of the veranda

  • Add the gutters of the side walls.
  • The bridles, then drill the sleepers high sleepers and the gutters (from below).
  • Screw the profiles into each other.

measure to align a porch

  • Measure the inside width of the structure at the top: at the front and then at the back.
  • Check the diagonals to make sure the walls are orthogonal and parallel.

align the porch rails

  • Then check the alignment of the lower sleeper rails to the threshold of the French window using a mason's rule and a spirit level.

3. Laying rafters

fix the veranda against the pinion

  • Assemble the rear rafters and present the first farm against the sprocket.
  • Draw your position and dig the bleeding.
  • Dust it and fill it with putty.

screw the rafters to the sleepers

  • Assemble and position the following rafters at the locations provided on the top rails.
  • Screw them from the inside through the pilot holes of the profiles.

screwing the rafters of the veranda

  • Assemble and position the following rafters at the locations provided on the top rails
  • Screw them from the inside through the pilot holes of the profiles.

nesting of the ridge sections of the veranda

  • Fit the radiating profiles from the ridge.
  • Finish by the two intermediate chevrons, parallel to the facade.

grout the roofing panels of the veranda

  • Arrange the joints of the roof panels on the top rails.

remove the protective film from the windows to grout

  • Peel off the protective film at the periphery of the glazing so that it does not get stuck in the joints when they are put in place.

screw the stops

  • Panels and roof glazing are maintained by integrated joint glazing.
  • Screw them into the rafters and rafters.
  • Then fit their protective cover.

Controls, fasteners and sealing

compensate for the irregularity of the screed under the veranda

  • Check the verticality of the uprights and the horizontality of the sleepers.
  • Arrange shims on both sides of the anchoring lugs to compensate for irregularities in the screed.

screw the anchors

  • The anchoring lugs being fixed under the lower sleepers, directly drill the clevis and the slab through the legs.
  • Thread and screw the legs (stainless steel screws).

isolate with mastic the junction between the pinion and the hood of the glazing beads

  • At the level of the pinion, protect the caps of the glazing beads with adhesive.
  • Place a bead of putty and spread it with a finger soaked in soapy water and remove the adhesive.

isolate with mastics the ridge of the veranda

  • Lay the rubber bibs covering the top of the windows.
  • Fill the junction of the ridge and rafters with putty.

screw the cladding of the porch frame

  • Then screw the corresponding covering (in a semicircle), making sure to arrange the joints of the latter covering the structural steel members.

insulate masonry studs

  • The amounts to the right of the masonry must be separated from it.
  • Twist two bottoms together and push them into the gap.
  • Then apply the sealant to the spray gun.

masking the junctions of gutters

  • Masking the pieces coming to cover the junction of the gutters.
  • Use bituminous adhesive for descents.

chew the interior of the gutter around the crapaudines

  • Spread mastic over the entire area and around the crapaudines.

Installation of the windows of the veranda

install the glazing from the inside

  • Install the fixed glazing from the inside with a pair of glazier's suction cups.
  • Work in pairs.
  • Fit the glazing beads and insert the corresponding seals.

engage the panels in the opening

  • Tilt sliding sashes, tilt the panels to engage them at the top.
  • Adjust their horizontality, then screw the upper stops.

fix the door window striker

  • To screw the strikers of the opening on the amounts of the dormant ones.
  • Then fix the locks on the opening.
  • Try the mechanisms before adding trims and handles.

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