Methods for soundproofing a sewer riser at home

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Res­i­dents of apart­ment build­ings know first­hand about the dis­com­fort that noise from a sew­er ris­er can cause. The prob­lem is rel­e­vant, pro­vid­ed that the old cast-iron drain, due to fur­ther unsuit­abil­i­ty, was replaced with a plas­tic ver­sion. Noise insu­la­tion of pipes will be expen­sive if you turn to pro­fes­sion­als. You can do this work your­self. The main thing is to fig­ure out how to do it right.

The meaning of the procedure

Com­plete­ly get rid of annoy­ing noise, unfor­tu­nate­ly, will not work. The cre­ation of sound insu­la­tion for sew­er pipes is car­ried out in order to reduce them to the low­est pos­si­ble lev­el. Giv­en the caus­es of noise in the apart­ment and the essence of the work per­formed, the goals can be divid­ed into three main areas:

  • Reduc­ing the degree of vibra­tion of plas­tic pipes.
  • Pre­ven­tion of trans­mis­sion of vibra­tions from the sew­er ris­er to the struc­tur­al ele­ments of the build­ing.
  • Cre­at­ing a bar­ri­er to the sound that occurs dur­ing the drain­ing of water.

The reasons

Noise iso­la­tion of the ris­er may be required due to the pres­ence of cer­tain cir­cum­stances or their pres­ence in the com­plex. Fol­low­ing are some of them:

  • Poor qual­i­ty of mate­ri­als that were used in the instal­la­tion of the drain. As a con­se­quence, the low resis­tance of the walls to mechan­i­cal defor­ma­tion.
  • The work was car­ried out with vio­la­tions of tech­nol­o­gy. The design of the pipes in the apart­ment was not done prop­er­ly.
  • Inap­pro­pri­ate selec­tion of seal mate­r­i­al.

Con­stant noise can lead to a dis­or­der of the psy­cho-emo­tion­al state of the ten­ants of the apart­ment. The direct source of noise is the ris­er, respec­tive­ly, the longer it is, the more vibra­tion and extra­ne­ous sound it cre­ates.

It should be remem­bered! The high­er the build­ing of an apart­ment build­ing, the stronger the noise lev­el will be. Espe­cial­ly on the low­er floors. Accord­ing­ly, it is there that the cre­ation of sound insu­la­tion is most impor­tant.

Classification

In under­stand­ing the rea­sons for this, there is noth­ing dif­fi­cult. The streams of water in the process of mov­ing along the ris­er col­lide with each oth­er, with air, hit the drain struc­ture itself. The result is the occur­rence of vibra­tion and extra­ne­ous sounds in the apart­ment. Noise can be clas­si­fied into the fol­low­ing cat­e­gories:

  • Drums. Mechan­i­cal impact of water flows on the design of the drain sys­tem and their inter­ac­tion with each oth­er.
  • Air. When water falls down, it col­lides with the “air bar­ri­er”, as a result, though slight­ly pro­nounced, but still noise occurs. The pres­ence of such, as a rule, is not the root cause of fin­ish­ing pipes with sound­proof­ing mate­ri­als.
  • Struc­tur­al. The pres­ence of this type of noise brings the great­est dis­com­fort to res­i­dents in an apart­ment build­ing. The flow of water, rush­ing down the pipe, gives it vibra­tion, which pass­es through the ceil­ings, walls, heat­ing pipes, plumb­ing and oth­er struc­tur­al ele­ments of the build­ing.

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Before pro­ceed­ing to the issue of prop­er instal­la­tion of sound insu­la­tion on sew­er pipes, it is worth con­sid­er­ing in more detail the cir­cum­stances that con­tribute to the emer­gence and ampli­fi­ca­tion of extra­ne­ous sound.

The height of the fall of the waste­water flow, of course, plays an impor­tant role, but the pipe man­u­fac­tur­ing mate­r­i­al con­tributes no less to the spread of noise. Plas­tic, despite all its advan­tages, is sig­nif­i­cant­ly infe­ri­or to cast-iron coun­ter­parts in this regard. Sew­er pipes made from the lat­ter are much more resis­tant to mechan­i­cal impact from water.

An alloy of cast iron has a cer­tain fea­ture that allows it to absorb some of the noise that occurs inside the pipe. The struc­ture of this mate­r­i­al is some­what porous. It con­sists of many small par­ti­cles, in the process of inter­ac­tion of which the sound is damped.

A sig­nif­i­cant role is also played by the fact that due to the “poros­i­ty” cast iron gains plaque on its sur­face, which to some extent also pre­vents the spread of sound.

To mod­ern ana­logues of sew­er pipes, such advan­tages are not applic­a­ble. Plas­tic, on the con­trary, is often called a kind of musi­cal instru­ment. It not only does not pre­vent the emer­gence and prop­a­ga­tion of sound that occurs in the pipe, but, on the con­trary, con­tributes to its ampli­fi­ca­tion, strong vibra­tion.

In par­tic­u­lar, when using this mate­r­i­al for the prepa­ra­tion of a gen­er­al, plaque does not form on the inner sur­faces of the pipes. There is a belief that the for­ma­tion of such a nat­ur­al “sound­proof” lay­er is not com­plete­ly inher­ent in plas­tic pipes. The opin­ion is wrong. The fact is that plas­tic real­ly suc­cess­ful­ly repels par­ti­cles from stick­ing, but only in a ver­ti­cal posi­tion. For exam­ple, in the pipe com­ing from the toi­let, plaque is quite the place to be.

The wall thick­ness of the ris­er is also impor­tant. The high­er it is, the low­er the pro­por­tion of noise pen­e­trat­ing into the room. The result­ing and sim­i­lar sit­u­a­tion with the weight of the mate­r­i­al of the sew­er drain. A large mass allows the sys­tem to be less sus­cep­ti­ble to vibra­tion.

Unfor­tu­nate­ly, this is espe­cial­ly true for apart­ment build­ings, sit­u­a­tions often occur that, due to the pecu­liar design of the build­ing, the sew­er pipe does not pass in the bath­room, but in the liv­ing room. These sit­u­a­tions don’t hap­pen often, but they do hap­pen.

Anoth­er mis­take that builders often make in the process of arrang­ing a sew­er pipe is the use of mount­ing foam as a seal­ing gas­ket. Do not for­get that its main prop­er­ty is the dense fill­ing of any space. As a result, it becomes an excel­lent con­duc­tor of vibra­tion.

Noise Elimination Methods

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If it turns out that the sew­er­age pass­es in the liv­ing room, then the most cor­rect solu­tion would be not to sound­proof the pipes, but to trans­fer them. Such a solu­tion to the prob­lem can only be car­ried out at the con­struc­tion stage. It will no longer be pos­si­ble to per­form the move after the com­ple­tion of the work. It’s fun­ny that this sit­u­a­tion also occurs in new build­ings due to mis­cal­cu­la­tions in the design. In prac­tice, the drain pipe most often runs in the bath­room or toi­let, if the bath­room. node is not aligned. Now direct­ly about the meth­ods.

Sound­proof­ing a toi­let in a pri­vate low-rise build­ing or in an apart­ment as a whole can be per­formed through the fol­low­ing oper­a­tions.

  • Instal­la­tion of silent pipes.
  • Fix­ing sound­proof­ing mate­ri­als.
  • Instal­la­tion of rigid clamps, in order to make the sew­er­age struc­ture more sta­t­ic.
  • Box instal­la­tion.
  • Pipe instal­la­tion or repair.

Silent pipes

Silent pipes can be called a nov­el­ty in the build­ing mate­ri­als mar­ket. They are not yet used so often, but they are suc­cess­ful­ly gain­ing recog­ni­tion among buy­ers. Dis­tinc­tive fea­tures of such a ris­er are a thick­ened wall and spe­cial com­po­nents that are designed to pre­vent the pen­e­tra­tion of sound and vibra­tion into the room. It is note­wor­thy that silent pipes extin­guish even infra­sound.

In addi­tion to such pos­i­tive qual­i­ties of the new mate­r­i­al, there are a cou­ple of sig­nif­i­cant draw­backs. The prices for such pipes are much high­er in com­par­i­son with the clas­sic ver­sion of PVC. Also, they do not dif­fer in a long ser­vice life, no more than 30 years. Of course, you can find more resis­tant options, but the price will increase in pro­gres­sion.

Fan pipes

At its core, this is ven­ti­la­tion for sew­ers. In a pri­vate house, the height of which does not exceed two floors, the instal­la­tion of fan pipes is not car­ried out, and there real­ly is no need for this. The leg­is­la­tion does not require this either. In rela­tion to mul­ti-storey build­ings, the pres­ence of a fan pipe is manda­to­ry. It allows not only to equal­ize the pres­sure in the ris­er, but also accu­mu­lat­ed gas­es are dis­charged into the atmos­phere through it, which can cause air­borne noise.

A func­tion sim­i­lar to fan pipes, but indoors, can be per­formed by air valves. Their pur­pose is to let air into the sew­er and at the same time pre­vent reverse move­ment. You can make sound­proof­ing for air ducts with sound­proof­ing mate­ri­als, but so as not to block the duct. If the capac­i­ty is dis­turbed, water from the ris­er can be direct­ed through the inlet.

Soundproofing

In prac­tice, the most com­mon sit­u­a­tion is when the sew­er­age sys­tem is already installed and its replace­ment will lead to unnec­es­sary finan­cial and labor costs. Thus, res­i­dents of apart­ments who have a need to reduce the noise lev­el from the ris­er resort to the use of var­i­ous kinds of sound­proof­ing mate­ri­als. As such, many options can be used.

The imple­men­ta­tion of sound insu­la­tion of the sew­er ris­er does not require spe­cial skills, it is enough to have at least a lit­tle expe­ri­ence in instal­la­tion work. The eas­i­est way to do this is through the use of foamed poly­eth­yl­ene or polyurethane foam.

As for the places where the ris­er pass­es through the floors of the build­ing, as men­tioned ear­li­er, you should not use mount­ing foam, since it only enhances struc­tur­al noise. Instead, you should take porous rub­ber. This will min­i­mize the pos­si­bil­i­ty of trans­mis­sion of vibra­tion to the build­ing struc­ture and elim­i­nate the acoustic effect.

On a note. The type of sew­er ris­er in sound­proof­ing is not pre­sentable enough. Based on this, it makes sense to close the pipe with a dec­o­ra­tive box. The design itself can be mod­i­fied with var­i­ous fin­ish­ing mate­ri­als.

The box will not only cre­ate a more attrac­tive appear­ance, but also give addi­tion­al sound insu­la­tion. It is impor­tant to take into account the moment that it should not be made deaf. Access to the water sup­ply is nec­es­sary, as it often pass­es in close prox­im­i­ty to the sew­er. There is a chance that you won’t have to do any­thing else behind the box, but the like­li­hood of an emer­gency must be tak­en into account. It is then that ease of access and effi­cien­cy of work can sig­nif­i­cant­ly reduce the detri­men­tal con­se­quences of an unfore­seen sit­u­a­tion.

materials

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Among the mate­ri­als that give the max­i­mum effect can be used:

  • Foamed poly­eth­yl­ene.
  • Polyurethane foam.
  • Foam rub­ber.
  • Sty­ro­foam shell.
  • Min­er­al wool.

Impor­tant. From the last option, name­ly from min­er­al wool, it would be more cor­rect to refrain. She, of course, will ful­fill her role, but is quite unsafe for the health of the house­hold.

Soundproofing with your own hands

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If there is a need to reduce the noise com­ing from the sew­er, then you should try to do it your­self. The work is not dif­fi­cult, but hired work will take decent mon­ey for it. Do-it-your­self sound­proof­ing of a sew­er ris­er with a high degree of prob­a­bil­i­ty will be no worse. The work algo­rithm is as fol­lows:

  • The pipe is mea­sured in order to deter­mine the amount of sound­proof­ing mate­r­i­al that will have to be pur­chased. You need to mea­sure the height of the pipe with a tape mea­sure. Then, for exam­ple, a cir­cle is deter­mined by a thread. The result­ing units must be mul­ti­plied. Add about 10–20% to the result.
  • Pur­chase of adhe­sive tape or clamps, and mate­r­i­al.
  • Wrap­ping the pipe with sound­proof­ing should be done so that the entire sur­face is cov­ered. Then the mate­r­i­al is fixed with adhe­sive tape (or clamps).

Common Mistakes

Despite the sim­plic­i­ty of the oper­a­tion, peo­ple often make cer­tain mis­takes. You should famil­iar­ize your­self with them in advance to avoid rep­e­ti­tion:

  • Wrong choice of mate­r­i­al. It is impor­tant not to con­fuse sound insu­la­tion with exter­nal­ly sim­i­lar ther­mal insu­la­tion. If in doubt, it would be right to con­sult with the store employ­ees.
  • The pres­ence of air under the sound­proof­ing. A loose fit of the mate­r­i­al to the sur­face of the pipe will make all the work mean­ing­less.

Sum­ming up, it is worth not­ing that it is quite easy to get rid of the noise that occurs in the ris­er. It is impor­tant to cor­rect­ly approach the per­for­mance of work and the selec­tion of mate­ri­als.

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