Glass wool has many advantages such as fire prevention, heat preservation and insulation, sound absorption and noise reduction, and easy to cut. It is one of the most commonly used materials for building heat preservation and sound absorption.  However, because the surface of centrifugal glass wool is not decorative, and there will be fibers scattered, so it must be concealed.  The construction process of glass wool insulation mainly includes the following aspects:  

1. Glass wool materials must have factory certificate and inspection report after entering the site, and can be installed after re-inspection.  

2, after the construction of the keel, in the keel sandwich shop stick fireproof glass wool insulation layer, glass cotton external insulation wall is composed of three parts of the wall structure layer, insulation layer, decorative layer, the main technical key to make the external insulation wall is: insulation layer and structural layer in connection.  

3. Connection mode between thermal insulation layer and structural layer:  Thermal insulation layer and structure layer connection with 8 * 120 disc plastic expansion bolt, 7 layer under each 5 expansion bolt, glass wool board layer 7 above each glass wool board eight disc plastic expansion bolt, glass wool board thickness of 80 mm, in order to ensure the expansion bolt anchor into the structure layer is more than 25, marking on the bit, ensure that the thickness of the glass wool board are negative.  

4, glass wool board installation  

1) The layout requirements of glass wool board: according to the standard whole sheet format, the board shall be staggered from bottom to top along the horizontal direction according to the length of 1/2 board.  Vertical staggered connection of fixed plates from the wall corner to ensure that the corner is straight and vertical.  Interlocking glass wool board at Yin and Yang angles.  Glass wool at the corners of doors and Windows should not be spliced. The whole piece of glass wool board should be used to cut and form the incision perpendicular to the board surface. The corners of the wall should be pasted and fixed with the same insulation board.  

2) the laying method of glass wool board is designed before use.  Calculate the size of cutting, cutting edge linear error should be less than 5 mm, the joint is not more than 2 mm, the gap between the plate and the plate using special adhesive tape.  

3) The glass wool board is connected from top to bottom. The glass wool board should be laid in sequence. When it meets the door and window opening, it should meet the requirements of the relevant atlas.  

4) Glass wool board surface anchorage and surface treatment  

Anchoring: in the installation of glass wool insulation board anchoring parts installed into the structural wall depth of not less than 25 mm.  Anchor bolts with a diameter of 8x120mm are used for anchoring, and electric hammer is used to drill holes in the outer wall with a diameter of 10mm.  The depth of the hole is 120-130 mm (including the thickness of the insulation board), and the plastic expansion bolt is installed and strengthened, so that the glass wool board is closely combined with the external wall.  

The anchorage point should be 1-2 mm below the surface of the glass wool board after fastening.  Anchorage point layout: in the glass wool board four corners and the middle of the horizontal seam are set up anchorage points.  

Anchor bolts are installed with a longitudinal spacing of 300 mm, a transverse spacing of 400 mm, and a quin-shaped layout. The corner of the wall at the base is encrypted to a spacing of 200 mm, and meets the requirements of the design and related standards.  

5, system waterproof and special parts of the treatment  

In the window door hole, the length and width of the plate are determined according to the wall part of the site.  

Waterproof and moisture-proof: Each glassy cotton board should be packed in a small plastic bag. Before installation, check whether the plastic bag is damaged or not.  Before hanging stone on the top of glass cotton board after construction, it should be covered with plastic sheets to prevent rain leakage on the inside of glass cotton board;  Glassy cotton board corner parts of naked leakage glassy cotton board, use the same material as the surface layer of aluminum foil stick firmly;  Stone joints silicone sealant must be tight.  

Prevent hot Bridges.  The embedded iron parts on each layer of the structure are welded with the main keel. The embedded parts here are hot Bridges. The inner side of each side beam is coated with 15mm thick Portland cement mortar partition hot bridge.  

Check the anchorage point, flatness and bonding quality of the glass wool board after the paving of grade A fireproof non-combustible glass wool board is finished, and dry hanging stone can be carried out after qualified.  

6. Quality requirements and guarantee measures  

1) Basic treatment: vertical, flatness within 5 mm.  All the embedded parts such as downfalls and lines before the fixed plate must be installed according to the requirements of design drawings and construction acceptance specifications.  Scaffolding should be at least 300 mm away from the wall.  

2) Cutting glass wool board: special knife and saw to ensure the precise size of the board and neat cutting edge.  

3) glass wool board: to strictly control the thickness of glass wool board, uniform width, straight, must ensure consistent combination, corner should bite stubble lap.  

4) Requirements of system parts:  

A. The apparent density of glass wool board should meet the design requirements.  

B. glass wool board surface shall not be exposed for a long time, to prevent glass wool board be affected with damp be affected with damp, each packed in small plastic bags, glass wool board at the top of the wall body with plastic film covering glass wool board, glass wool board should be timely inspection, after installed and is installed outside dry hanging stone, and in a timely manner to play good weather resistance silicone sealant, prevent ooze water when it rains.  

C. Check the standard value of tensile bearing capacity of a single anchor bolt is greater than or equal to 0.3kN.  

D. When installing glass wool panels, the panel seams should be tightly squeezed, the adjacent panels should be flush, the gap between the panels should not be greater than 2 mm, and the height difference between the panels should not be greater than 1.5 mm.  

E. The ambient temperature of external thermal insulation construction shall not be less than 5℃, and construction shall be prohibited in windy weather and rainy weather above grade 5.  

F. Quality deviation requirements meet relevant regulations.  

7. Quality inspection  

All kinds of materials should be inspected before entering the site in addition to production license, product certificate, test report and other certificates, glass wool board should meet the requirements of GB/T17795-1999.  During the construction process, the project manager assigned special personnel to strengthen management.  In the construction of each sub-project after inspection, acceptance can be carried out after the next process.  Glass wool board shape should be smooth, no obvious expansion and contraction deformation, no oil stains and impurities.  The size and allowable error must meet the specification requirements.  When the external wall insulation materials enter the site, they should be accepted and re-inspected according to the relevant national and provincial standards for building materials.  

According to db129-126-20052 Wall insulation inspection Report standard 5.3.4, each inspection batch of 4000㎡ shall be executed.  Collect and summarize the completion acceptance data of external insulation during construction.  

External wall insulation system design documents, drawings review, design changes and negotiation records.  External insulation system inspection report and its main components of the product certificate, factory inspection report, site re-inspection report and site acceptance record, construction process record and construction quality inspection record.