Execution of the correct
insulation of a part of the building, in contact with the ground, is a key
element ensuring trouble-free operation of the facility in the future.
Execution of proper
insulation of the part of the building in contact with the ground is a key
element ensuring trouble-free operation of the facility in the future.
Construction engineers
have at their disposal a whole range of waterproofing materials and solutions. However, one should choose solutions
that provide some protection for many years. The
factor that is becoming more and more appreciated by the contractors is the
friendly, not difficult to process. For
several years, also on the Polish market, polymer modified bituminous mastics
(also referred to as KMB masses) are gaining increasing popularity. Among their most important advantages
should be mentioned:
- possibility of
seamless coating - continuous, without connections,
- the lack of water
permeability obtained due to full connection with the ground (a condition
practically impossible to achieve when using tar and foil),
- cracking ability of
scratches (up to 5 mm ),
- reliable and
uncomplicated execution of connections of critical places (wall connections
with a continuous footing, connection points of the installation, expansion
joints),
- the ability to perform
damp substrates on matt,
- no need to make
plaster on small-sized elements.
BOTAMENT®
Systembaustoffe has in its offer a product that allows you to perform some
anti-moisture and anti-moisture insulation, quickly and conveniently, and
provides the ability to conduct insulation works throughout the year.
BOTAZIT® BM 92 is
available in two assortment types. BOTAZIT®
BM 92 Schnell is a two-component bituminous sealing compound reinforced with
special fibers, characterized by fast drying and fast resistance to atmospheric
precipitation, after drying it creates a tight elastic (bridging cracks)
coating. The product can be
applied using a spray device. The
so-called. winter version or
BOTAZIT® BM 92 Winter, may further be stored at or below -5 ° C , and the treatment is possible even
at substrate temperatures and ambient temperatures above 0 ° C . BOTAZIT®
BM 92 allows virtually all year round insulation of buildings against soil
moisture, non-accumulating or damming seepage water, as well as ground water
whose level periodically or permanently occurs above the building foundation
level.
Execution of the
insulating coating
The key element of the
work leading to the implementation of a tight bitumen insulation is the proper
preparation of the substrate. Substrate
under BOTAZIT® BM 92 Schnell / Winter can be concrete, cement or cement-lime
plaster, a wall made of full ceramic brick, checker brick, silicate brick, as
well as wall hollow blocks, concrete blocks and blocks of cellular concrete. The substrate must be dry or
damp-moist (no water stagnant), clean, unaffected and load-bearing. It should be removed from any
substances that may reduce the adhesion of the coating. Protruding parts of the mortar should
be removed, but joints and any gaps and defects larger than 5 mm should
be filled with mineral mortar, eg BOTACEM® M 100. Depending on the material
used for horizontal insulation of the continuous footing, appropriate steps
should be taken to ensure continuity with vertical insulation. In inner corners, you have to make an
imagery (the so-called facet) from mineral mortar (at the later stage of works
it is also possible to make a facet of bituminous mass), while all external
corners should be chamfered. Substrate
priming is carried out using BOTAZIT® BE 901 Concentrate diluted with water in
a ratio of 1: 5 to 1:10 (depending on the absorbency of the substrate). Substrates with low surface strength
(eg cellular concrete) can be primed with BOTAZIT® D 12 deep joint compound.
In order to close
unevenness up to 5 mm , pores and cavities, filler filling
(so-called scratching) is applied using BOTAZIT® BM 92 Schnell / Winter. This avoids the formation of bubbles
when making the correct coating. The
BOTAZIT® BM 92 Schnell / Winter material should be applied to the insulated
surface using a spatula or with a spraying device in a minimum of two layers. Depending on the prevailing ground and
water conditions, layers of appropriate thickness should be made. In the case of soil humidity and water
that does not exert hydrostatic pressure, the insulation thickness measured in
the dry state should be at least 3
mm , whereas in the case of water
exerting pressure, a minimum of 4
mm . In the case of heavy insulation (water
under pressure), a rot resistant, glass-fiber mesh should be embedded in the
first layer.
The material properties
of BOTAZIT® BM 92 Schnell / Winter allow you to conveniently and efficiently
insulate such details as installation passes or construction joints (in the
latter case, use special BOTAZIT® B 180 / B 300 sealing tapes).
To backfill the
excavation you can proceed after the coat has dried completely. To avoid damage to the insulation by
clay, gravel or rubble during backfilling of the excavation, as well as due to
movements of the ground surrounding the building (eg as a result of freezing
and thawing) the coating should be adequately protected. For this purpose, we recommend the use
of a BOTAZIT® DS 993 protective and drainage board or rigid boards made of
extruded polystyrene.
Building insulation
using the BOTAMENT® Systembaustoffe system
1 - horizontal
insulation (BO TAZIT® M 34 or
BOTAZIT® MS 30),
2 - brick wall,
3 - insulating shut-off
layer,
4 - insulation of the
pedestal part of the building (BOTAZIT® M 34 or BOTAZIT® MS 30),
5 - insulation against
negative impact of water (BOTAZIT® M 34 or BOTAZIT® MS 30),
6 - imagery of mineral
mortar (BOTACEM® M 100),
7 - priming of the
substrate (BOTAZIT® BE 901 Concentrate or BOTAZIT® D 12),
8 - vertical insulation
made in two layers (BOTAZIT® BM 92 Schnell / Winter),
9 - BOTAZIT® DS 993
protection and drainage board,
10 - drainage,
11 - thermal insulation,
12 - horizontal
insulation of the floor (BOTAZIT® BM 92 Schnell / Winter),
13 - screed
Water is a fluid
element, it will not let you dominate so easily (Paulo Coelho). The BOTAZIT® BM 92 Schnell will be
easier in the ground-level part of the building and BOTAZIT® BM 92 Winter in
winter.
