concrete screed - an easy way to level the floor and build a firm foundation for surface finish - ceramic tile, linoleum, or a laminate.
- Concrete floor screed: what is it?
- concrete screed: types
- screed screed with a separating layer
- Screed with an insulating layer
- Concrete screed: types
- screed with reinforcement.
- screed of Fiber.
- In concrete density allocate these types
- marking bags of concrete
- How to make a concrete floor with his hands
- you need such a tool:
- You will need these materials:
- Concrete floor screed in the apartment: VIDEO
- ProgressWorks on laying concrete screed
- heat in your home
- concrete screed on a wooden floor: how to make a tie?
- Concrete floor screed: VIDEO
- $ concrete screed: the price of materials
- $ cost of the concrete floor screed: Repair by craftsmen
Concrete floor screed: what is it?
Base under the finish flooring is performed in several ways: it can be dry (screed with expanded clay), semi-dry and wet scree
concrete screed referred to as the wet type, becauseit is used to create a slurry. materials for concrete ties are cement and sand mixture, a number of leveling compounds, aerated concrete.
so-called full-fledged tie -Required condition during overhaul floor: cement-sand mortar with the use rather than cellular concrete, asthe solution is simple and does not require special knowledge or any specialized equipment for the production of concrete.
In a simple repair to restrict self-leveling floor can be a mixture of: a mixture of light concrete pouring will not take much time.
concrete screed: Screed
types of concrete - is a solid surface that can be associated or to have a separation insulating layers:
This type of arrangement ties performed by the method of pouring the mixture on the basis of gender, without substrates.The base in this case must be primed deep penetration.Only this tie will have the best adhesion to the substrate and can withstand high loads.
screed separating layer
When constructing this type of screed on the basis of sex in the beginning made laying of waterproofing materials (on the ceiling material overlap should be at least 15-20 cm), and on top of them already poured concrete.Waterproofing materials can act obmazochnye, roller or paint materials.
minimum thickness of screed in this case is 30 mm (compared to the standard thickness of the concrete floor screed for residential apartments ranging from 30 to 50 mm) - enough to ensure the strength of the coating.
Waterproofing screeds is required in wet areas (eg bathroom).Indicators of the strength in this type of screed slightly reduced.
Screed with an insulating layer
insulating layer under the screed is laid in the case where it is important to create a floor with a high insulation performance.
So, without the insulating layer in the organization of the screed under floor heating to 25% of the heat it took to the floor.This type of coupler referred to as "floating".Its advantage - in a high thermal, hydro and sound insulation properties.Nevertheless, the "floating" screeds strength significantly below the threshold of the other two species because it is not suitable for environments with high mechanical loads.
Concrete screed: types
strength of concrete reinforcement coupler attached - Use metal mesh or fiberglass:
screed with reinforcement.
This is one of the most common types of reinforced floor screed.Principle of installation: the net with a mesh of 40-50 mm are placed on props all over the floor.
Among the obvious disadvantage of this method can be listed are:
- mesh does not prevent the formation of cracks in the concrete screed during its shrinkage;
- metal may oxidize over time because there is a possibility of the bundle tie.
screed of Fiber.
Fiberglass - supplement to the standard cement mixture designed to increase the adhesion of the screed and several reduce the cost of paving.
Fiberglass can be added to tie instead of a metal mesh.This superfine fiber - microfiber, obtained from the polymer granules, in addition to the reinforcing effect of making concrete screed plastic, and therefore - and more resistant to cracking.
undeniable plus in the treasury ties with microfiber - material price: the cost of reinforcing mesh, for example, an average of $ 1.65 / m, and fiber costs only $ 0.26 / per square meter screed.Lack also have this type of tie: if you overdo it with the addition of fiberglass in mortar, concrete will crumble.
In concrete density allocate these types
- particularly lightweight concrete (density of only 500 kg / m³).Because of lightweight concrete blocks produce cellular - foam concrete and aerated concrete.
- Lightweight concrete (density from 500 to 1800 kg / m³).For lightweight concrete fillers are expanded clay and pumice.
- heavy concrete (density of 1800 kg / m to 2 500 kg / m³).The composition of the concrete are rocks - granite, limestone (different proportions).
- especially heavy concrete (density 2500 kg / m³ and above).Filled by sawdust steel, iron ore.
marking bags of concrete
When buying concrete should also understand the labeling of bags:
F - designation of frost, the figure at the given letters - meaning how many complete cycles of freezing and thawing, this poppy concrete can withstand.
W - waterproof designation, ie,which is able to withstand water pressure this brand.
P - mobility index and rainfall.
M-100 - low grade concrete, is fit for the organization borders.
M-150 - variety, suitable for most organizations screed floors, pavings, paths in the yard, soaked ground.And the strength of concrete M-200 satisfies virtually all the tasks of the individual construction: laying the foundation, production of stairs, platforms on the street, etc.
M-250 - grade of concrete used for the manufacture of monolithic foundations.
There are also brand M 300, M 350, M 400, M 450 and M 500 m 550 , but they are in the individual building used rarely or not used at all.
How to make the concrete floor with his hands
preparatory work before the device ties include: surface preparation, purchase of necessary materials and tools.
you need such a tool:
- rules up to 2 m (one rule to the level of the second - a common solution for smoothing);
- levels (laser stamped and alcohol);
You will need these materials:
- primer deep penetration;
- primer for improving adhesion;
- number of waterproofing materials (mastic, plastic film);
- if necessary - insulation materials;
- mixes mixture;
- beacons and fasteners for them.
Concrete floor screed in the apartment: VIDEO
Progress on laying concrete screed
clears the ground of dust and debris.
be marked on the perimeter of the room, using a laser level or zero.Note the location of the beacons and the upper level of the screed.
Install guide beacons, or securing them with screws or alabaster.
distance between beacons should not exceed 1.5-2 m. Lighthouses fix the place of installation.After checking the horizontality of lighthouses and their coincidence with the level of the screed can proceed to the next step.
After applying markings and mounting rails proceed to priming the floor, laying hydro or thermal surface.
Before you pour the concrete, Primers, deep penetration process the surface of the floor and wall joints and floor corners of the room coat with waterproofing mastic. Better adhesion can be achieved, missed the entire surface area of floor adhesive primer.Give materials dry.
poured concrete screed.Mixing can be carried out using the punch with a special nozzle-type "mixer."
solution in portions spread on the floor surface and tightens it by smooth metal rule along the guide beacons.Ties are beginning from the wall opposite the entrance doors.
In a nutshell, it's all the technology of a concrete screed floor (the concrete floor).Prior to complete solidification surface held at least 14-28 days.
how much drying screed indoors, will depend on its stability.I do not recommend starting finishing work after only 2-3 days after pouring concrete.
After drying, the surface can be treated: a concrete screed grout "helicopter" (Grinder) makes the surface smooth, smoothing out irregularities.
heat in your home
concrete screed - pretty cool base with low heat saving. Because when screed is recommended to use insulation.Ties can be placed on a heater: Penoplex or izolona (with foam, as well as with the laying on polystyrene and problems should arise).
concrete screed on a wooden floor: how to make a tie?
Dismantling not required!In the case of the need to pour concrete on wooden beams, pay more attention to the preparatory phase: obscure gaps between the boards (can be used with foam or epoxy resin), the joints between walls and floors are treated with sealant.
floor littered with plastic wrap on top of which performs a standard concrete floor.When leveling the surface of the floor that was not enough, the concrete can be poured on the plywood tightly bolted to the wooden floorboards.
When it comes to the old house, the arrangement of ties to verify whether the floorboards creak not, fix the board to the joists with screws in case of deflections.
screed, laid on top of the wooden floor should be heavy and immobile.Note that the thickness of the screed in this case should not be less than 30 mm.
Before you align the wooden floor with concrete, consult with experts: whether the supporting structures withstand the extra weight, if necessary, obtain approvals for the repair work in local government.
IMPORTANT! In rooms with wooden floors in the frequent change of the level of humidity and temperature conditions (for example, in the bath) such an organization is not desired sex.
Concrete floor screed: VIDEO
$ concrete screed: the price of materials
Calculating the cost of procurement of materials can be based on these prices:
- plasticizer (BETA PLAST) - 16 $ (5 liters);
- fibrovolokno (basalt) - $ 5.1;
- concrete M-150 - 75 $ / m (concrete consumption - approximately 0.15-0.2 m³ to 12 m² at a thickness of 5 cm screed);
- beacons - 1 $ / pcs.(3 m);
- deep penetration primer (Ceresit moment) - from $ 4 (5 liters);
- mastic (hydroplane) - from $ 4 / kg.
$ cost of the concrete floor screed: Repair by craftsmen
- price for the wizard in Moscow - 450-530 rub. / M;
- price for the wizard in Kiev - 45-70 UAH. / M².