Key takeaways
- A booster improves 2G, 3G and 4G/LTE signal; it does not amplify 5G, but 5G phones still benefit because calls run over 4G VoLTE and phones fall back to 4G indoors.
- Thick brick or AAC walls: each wall the signal passes through takes away some strength.
- Once the slab is cast and walls are up, walk through the ground floor, inner rooms and basement.
- Coaxial cable is thicker and stiffer than electrical wire, so the conduit needs a little more thought.
If you are building or renovating a house in India, the cheapest time to fix weak indoor mobile network is before the walls are plastered and the false ceiling goes up. RCC slabs, brick walls, basements and modern glass often leave the inside of a new house with poor signal, and the fix is a mobile signal booster connected by coaxial cable. Laying one empty conduit and a few antenna points during construction takes a few hours of your electrician's time. Adding them after the paint is done means surface wiring or breaking finished walls.
Quick answer
- A mobile signal booster needs three cable runs: from the roof antenna to the booster, and from the booster to each indoor antenna. Planning concealed conduit for these during construction avoids visible wiring later.
- Check the outdoor signal on the roof or terrace before planning anything; a booster amplifies existing signal and cannot create it where there is none. One or two bars outdoors is usually enough.
- Keep the coaxial cable in its own conduit, separate from electrical wiring, and keep the run from roof to booster as short as practical, because longer cable loses more signal.
- Place indoor antenna points centrally on ceilings of the rooms you use most, and keep them well away from the outdoor antenna, ideally with the roof slab between them.
- A booster improves 2G, 3G and 4G/LTE signal; it does not amplify 5G, but 5G phones still benefit because calls run over 4G VoLTE and phones fall back to 4G indoors.
Why do new houses often have weak mobile network inside?
Most families only discover the network problem after shifting in. During construction the site is open, there are no doors or windows, and phones work fine. Once the structure is closed, the same building materials that make a house strong and cool also block radio signal.
- RCC slabs and columns: reinforced concrete with steel bars is one of the biggest signal blockers, especially on lower floors and in rooms deep inside the plan.
- Thick brick or AAC walls: each wall the signal passes through takes away some strength.
- Basements and stilt parking: below-ground spaces often get almost no signal at all.
- Coated or tinted glass: energy-saving glass can reflect mobile signal along with heat.
- Distance from the tower: plots in new colonies, farmhouses and village homes may be far from the nearest tower, so the signal arriving outside is already weak.
None of this is a fault in the construction. It simply means the signal that is available outside does not reach the rooms inside. That is exactly the gap a booster fills.
Should you plan for a booster before you know you need one?
Not always. Planning an empty conduit is cheap insurance, but buying equipment before you know the indoor situation is not sensible. A practical approach:
- Test the site now. Stand where the roof or terrace will be and note the signal for each operator your family uses. Our signal strength checker explains how to read the numbers on your phone.
- Test inside the shell. Once the slab is cast and walls are up, walk through the ground floor, inner rooms and basement. If calls drop there, you will need help indoors.
- Lay conduit either way. If the site is in a weak-signal area, or you are building a basement, lay the conduit even if the shell seems fine. It costs little, and closing doors and windows later usually makes signal worse.
Be honest with yourself about one case: if there is no usable signal even on the roof, a booster will not work. In that situation, a fibre broadband line with Wi-Fi calling is the better plan.
What should you plan at each stage of construction?
Share this table with your contractor or electrician. It lists what to do and when, so nothing gets missed between stages.
| Construction stage | What to plan | Why it matters |
|---|---|---|
| Before roof slab casting | A sleeve or pipe through the top slab or parapet for the antenna cable, plus a spot for an antenna pole | Avoids drilling through a finished, waterproofed roof later |
| Wall chasing for electricals | A dedicated conduit from roof to booster location, and from booster to each indoor antenna point | Keeps cable hidden and separate from power wiring |
| False ceiling or POP work | Antenna points on the ceiling at the centre of key rooms, with a pull wire left inside the conduit | Ceiling-mounted antennas spread signal evenly and look neat |
| Electrical point layout | One power socket at the booster location, preferably on inverter or UPS backup | The booster needs constant power to keep calls working during cuts |
| Before shifting in | Install and test the booster kit, then check every room | Lets you adjust antenna positions before furniture goes in |
How do I plan the conduit for coaxial cable?
Coaxial cable is thicker and stiffer than electrical wire, so the conduit needs a little more thought.
Use a separate conduit
Do not run the coaxial cable in the same pipe as power wiring. A separate conduit keeps the cable away from electrical noise and makes it easy to replace later.
Keep it wide and gently curved
Thicker low-loss cables do not like tight bends. Use a wider conduit than you would for a light point, use long sweeping bends rather than sharp elbows, and avoid too many turns. Ask your electrician to leave a strong pull wire inside so the cable can be drawn through after plastering.
Keep the roof run short
Every metre of cable loses some signal, so the booster should sit as close to the roof antenna as practical: a top-floor store, a staircase cabin, or a loft. From there, the indoor runs can go down to the rooms. If a longer run cannot be avoided, a thicker, lower-loss cable helps. Our LMR-400 coaxial cable is ₹160 per metre and LMR-300 is ₹120 per metre, so measure the route on your drawings before you buy.
Where should the antennas go?
Outdoor antenna
The outdoor antenna goes on the roof or terrace, on a short pole, facing the direction where signal is strongest (usually towards the nearest tower). A directional antenna such as an LPDA outdoor antenna works well when the tower is far away and in one clear direction. Plan the pole at the edge of the roof facing the tower, not behind a water tank or stair cabin.
Indoor antennas
Indoor antennas cover the rooms where you actually use your phone. A ceiling-mounted dome antenna placed near the centre of a room or hallway spreads signal in all directions. For a typical duplex or independent house, think about:
- The living and dining area, where most calls happen
- The master bedroom and any room used as a home office
- The basement or stilt parking, if you have one
- A central staircase or lobby, which can feed signal to nearby rooms on each floor
Keep the two antennas apart
If the indoor antenna can "hear" the outdoor antenna, the booster can go into feedback and reduce its own output. The roof slab between them is the best separation, so avoid placing an indoor antenna on the top-floor ceiling directly below the outdoor pole.
How many indoor antenna points do I need?
It depends on the floor area, the number of floors and how many walls the signal must pass through. As a starting point:
| House type | Suggested indoor points | Typical approach |
|---|---|---|
| Single-floor house, compact plan | 1 | One central ceiling antenna |
| Two-floor house or duplex | 2 | One antenna per floor, connected with a 2-way splitter |
| Three floors, or two floors plus basement | 3 | One antenna per level, connected with a 3-way splitter |
| Large bungalow or farmhouse | 3 or more | A higher-coverage booster with several antennas, planned after a site consultation |
It is wise to lay one extra conduit to a future antenna point, for example a terrace room or an extension you may build later. An empty pipe costs very little today.
Which SIGLIFT setup suits a new house?
Every SIGLIFT kit includes the booster, an outdoor antenna, an indoor antenna, coaxial cable and a power adapter. Coverage ranges from 1,500 to 10,000 sq.ft depending on the model, and more rooms or floors can be added with splitters and extra indoor antennas from our accessories range.
- Compact homes: a 1,500 sq.ft kit is often enough for a single floor or a small independent house.
- Two to three floors: add a 2-way or 3-way splitter and one dome antenna per floor, along the conduit routes you have already laid.
- Large houses with basements: a higher-coverage model, planned with the help of our basement signal guide.
- Mixed operators in the family: choose a model that covers the bands of every SIM in use. Jio uses 850/1800/2300 MHz, Airtel 900/1800/2100/2300 MHz, Vi 900/1800/2100 MHz and BSNL 900/2100 MHz, varying by telecom circle.
See all options on our network booster for home page. Once the conduit is ready, our installation guide shows how the kit is fitted. Prices are quoted after a free consultation, because the right model depends on your plan, the outdoor signal and the operators you use. Every kit comes with a 1-year warranty, free shipping across India, cash on delivery, 10-day returns and 24x7 technical support.
When is a booster not the right fix?
- No signal on the roof at all: a booster needs some outdoor signal to amplify. Plan fibre broadband with Wi-Fi calling instead.
- Strong signal but slow data at peak hours: that is usually tower congestion, which a booster cannot fix.
- You only need 5G speeds: SIGLIFT boosters amplify 2G, 3G and 4G/LTE, not 5G. Calls and everyday data on 4G will improve, but not 5G-specific speeds.
Frequently asked questions
Can I add a signal booster after the house is finished?
Yes. Most installations happen in finished homes, using neat surface cable routes, existing ducts or a window entry. Planning conduit during construction simply gives you a cleaner, fully concealed result with less effort.
Can the booster cable share a conduit with TV or internet cables?
It is better to give the booster cable its own conduit. If you must share, keep it away from power wiring and make sure the pipe is wide enough to pull the thicker coaxial cable without forcing it.
Where should the booster unit itself be placed?
Place it indoors in a dry, ventilated spot close to the roof antenna, with a power socket nearby, ideally on inverter backup. A top-floor store, a loft or a staircase cabin usually works well.
Will one booster cover all floors of my house?
Often yes, if the coverage of the model matches your area and you use splitters with one indoor antenna per floor. Very large houses or homes with heavy RCC may need a higher-coverage model, which we confirm during the consultation.
Should I test signal before or after construction?
Both. Test on the roof or terrace early to confirm there is outdoor signal to amplify, then test inside once the walls and slab are up. The second test shows which rooms actually need antenna points.
Building or renovating right now? Send your floor plan and a screenshot of your roof signal on WhatsApp at +91-9650237601, or call us for a free expert consultation before your electrician starts wall chasing. You can also use our Signal Booster Finder to see which kit fits your house.
Written by the SIGLIFT technical team — mobile signal booster specialists for Indian networks. Last updated . Questions? Talk to us.
