The house is where we live, and the warm family life is spent here. If there are cracks on the roof, we will worry about the safety of our rooms. Is there any danger in the roof cracks? No matter whether the roof cracks are dangerous or not, they need to be evaluated and repaired in time, and the indoor aesthetics will be damaged, which may also lead to safety maintenance. So how to deal with the roof cracks?
Is the roof cracks dangerous?
1. If the roof cracks only appear on the surface of the concrete floor, we should clean them first, and then wait until the cleaned parts are dry, then we can use epoxy resin liquid to fill the cracks or use surface brushing to close them. If cracks are found before the final setting of construction, then we should plaster them again.
2. For the treatment of other common cracks on the roof (other cracks refer to cracks with a width of .5 mm ~ .2 mm), the construction method is as follows: firstly, clean the slab joints, and then add 1: 2 or 1: 1 cement mortar to smooth the cracks, flatten and maintain them, and close them to restore the look and feel. (only limited to the joints with small number and non-long, well-connected joints)
3. When the cracks (width greater than .2mm) are large, a splayed groove should be chiseled along the cracks, which should be smoothed with 1: 2 cement mortar after washing, or epoxy mortar can be used for caulking. (only limited to the joints with few joints and non-long and through joints)
4. When cracks appear in the floor with a large area, static load test should be carried out to check the structural safety of the floor, and if necessary, a layer of steel mesh can be added to the floor to improve the integrity of the floor. Or seal the board with epoxy resin liquid (a waterproof layer is also acceptable), and stick carbon fiber cloth at the bottom of the board into a well shape with the same spacing and width.
5. For the long and penetrating dangerous structural cracks with a crack width greater than .2mm, the treatment method also includes: in addition to flushing the V-shaped groove along the joint, injecting epoxy resin liquid into the joint with pressure to seal it, and strengthening the floor with measures such as sticking flat steel or carbon fiber cloth. When strengthening with carbon fiber sheets, for a single crack, in addition to sticking along the seam, it is necessary to spread the width at intervals perpendicular to the seam direction; For a plurality of intersecting seams, paste them in hash shape with the same spacing and width. (The width of the cloth should be about 3mm)
6. Paste the bottom of the board in both vertical and horizontal directions when the number of through-length, through-length and non-through-length, and through-cracks are the same.
Is there any danger in the roof crack
1. If there is a wall crack between doors, if there is both inside and outside, and the position is the same, it is the foundation settlement. Pay attention to observe that the crack does not continue to expand and widen, and the foundation settlement has stabilized. This kind of crack is not dangerous, just like the human bones are somewhat flawed, and everyone can still do it. Or, in the professional sense, the houses can work with cracks, which means that after the concrete members are poured blindly, the curing conditions, early shrinkage and temperature changes will cause some micro-cracks inside.
2. If the load-bearing wall is seriously damaged, resulting in many cracks on the roof, it will be dangerous. Because the load-bearing wall is the wall supporting the weight of the upper floor, when cracks appear in this case, the service life of the building will be slightly affected, and the building may collapse.
how to deal with roof cracks? Is the roof crack dangerous? In a word, if the roof cracks are not treated in time, it will cause serious consequences and even lead to safety threats. Therefore, once the relevant situation occurs, please ask professionals to check the specific situation in time, and then do the next repair.