How to choose plastic windows for an apartment or house according to parameters and budget
Choose windows with a profile of at least 70 mm and five chambers for an apartment in a high-rise building and from 76 mm with six chambers for a private house – this configuration retains heat in frosts down to < 25°C and reduces street noise by 30–35 dB. For living rooms, double-chamber double-glazed windows 40–44 mm thick with energy-saving coating and argon are suitable, and on the sunny side – glass with a sun protection layer to reduce overheating in the summer.
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take fittings with a minimum of 5 pressure points on the sash: this way the window maintains its geometry and closure tightness during daily use. Check the burglary resistance class – RC2 for the first floors and private houses, as well as the presence of micro-ventilation for stable air exchange without drafts. EPDM seals last 10–15 years and do not lose elasticity at & minus; 40°C.
Installation in accordance with GOST with a three-layer junction unit closes the seams from moisture and blowing. Check that the installation depth of the window sill does not block the convection from the radiator, and that the ebb tides have a slope of 5–7°. For entrance areas and balconies, it is reasonable to buy plastic doors with reinforcement no thinner than 1. 5 mm and an aluminum threshold – it can withstand the load and is not afraid of moisture.
Fix the parameters in the contract: profile brand, glass unit formula, type of fittings, date of manufacture and a guarantee of at least 5 years for the product and 3 years for installation. This approach eliminates surprises and gives predictable results immediately after installation.
Selecting a PVC profile: number of chambers, wall thickness and suitable brand
Number of chambers and wall thickness
The chambers work as air gaps: 3 chambers are suitable for unheated rooms, 5 chambers for most apartments, 6–7 chambers for private houses in cold regions. Installation depth of 60 mm is the basic level, 70–76 mm is optimal, 80–82 mm is for increased requirements for thermal insulation.
The thickness of the outer walls of the profile determines the rigidity. Class A – from 2. 8 mm, class B – from 2. 5 mm. For large sashes, panoramas and door blocks, take class A: it is less deformed and retains its geometry longer. This is especially true if you are planning buy plastic doors in Ekaterinburg for access to a balcony or terrace.
The right brand for the task
Focus on geometry stability and raw material control. REHAU and VEKA offer class A profiles with predictable quality for apartments and houses. KBE and Salamander are suitable for a limited budget, provided that you select series with a depth of 70 mm or more. For northern regions, see lines with reinforced reinforcement and the ability to install double-glazed windows up to 42–52 mm.
Check for galvanized reinforcement no thinner than 1. 2–1. 5 mm for windows and 1. 5–2. 0 mm for doors. Request certificates and a specific profile series, and not just the brand name – parameters vary markedly within the same brand.
Selection of double-glazed windows: number of glasses, chamber filling and noise protection
The number of glasses directly affects comfort. Single-chamber (2 glasses) suitable for balconies, loggias and unheated rooms. Two-chamber (3 glasses) covers most of the tasks: warmth in winter, stable temperature in summer. The three-chamber one is rarely used – its mass is higher, and the benefit is felt only in harsh climates or for panoramas.
Filling the chambers increases insulation. Argon or krypton inside the package reduces heat transfer; with the same thickness, argon gives an increase of up to 10–15%. Check the presence of a spacer with a sealed contour – a gas leak reduces the result after just a few years.
To protect against noise, use different thicknesses of glass: a combination of 4–6–4 mm dampens resonance better than identical sheets. Add triplex with acoustic film – the noise level drops by 3-5 dB, which is noticeable at night. Guideline: for a street with traffic, choose an Rw index of 40 dB.
Low-E coatings reflect heat back into the room. One energy-saving glass reduces losses by up to 20%, two – up to 30%. For south-facing windows, add solar control to reduce heat gain without darkening it.
Consider weight. Heavy packages require reinforced fittings and correct installation. For doorways where you plan to buy plastic doors, choose tempered glass or triplex – it is safer and lasts longer with frequent openings.
Check the glass unit formula in the contract: thickness of glass, type of gas, presence of coatings. Clearly defined parameters ensure that you get silence and warmth, and not just “three glasses”. without the necessary properties.
Installation and measurement parameters: installation requirements and quality control of work
Installation Requirements
Leave an installation gap of 20–30 mm around the perimeter for windows and up to 40 mm for doors; A smaller gap leads to frame deformation, a larger gap leads to mounting instability. Place the fasteners in increments of 600–700 mm, the distance from the corners is 150–180 mm. Alignment should be carried out using a level and plumb line, without “pulling up” frame fasteners. Form the installation seam in three layers: vapor barrier tape on the inside, polyurethane foam with uniform density in the middle, diffusion tape or sealant on the outside to protect against moisture and UV. Install a support profile and a rigid lining under the window sill to prevent sagging.
Checking the quality of work
Check the geometry: the sashes should open without jamming, the gaps around the perimeter should be the same. Evaluate the pressure with a sheet of paper: it does not stretch when the sash is closed. Inspect the seams – the foam should not be visible from the outside or inside, the tapes are glued without tears. Check the ebb: the slope is 5–7°, the sealing of the junction with the frame is continuous. After installation, perform control ventilation and a wind test. Documents for the work, an acceptance certificate and a warranty for installation of at least 5 years are required.
