Epoxy Application Data India - Pot Life and Humidity

Q: Why does epoxy get cloudy in NCR?

Humidity above 80% is the main cause. Clouding starts once relative humidity crosses 80%, and the failure rate jumps to 22–40% across all products. The worst case in our records was a ₹15,000 pour at 91% relative humidity.

Q: How long does a 7.5kg Bondone Flowtop pack cover?

4–6 sqm at the recommended 1.5–2mm thickness, with a theoretical yield of 3.75 sqm at exactly 2mm.

Q: Which products will not cure below 15°C?

Bondone Flowtop and Bondone Silcrete will not cure below 15°C. Clear Cast and Clearlam CC will cure but take 10–14 days, and the finish is poor below that temperature.

Q: What is the best time of year to pour epoxy in NCR?

March–April and October–November. Temperatures sit in the 16–36°C range with 35–65% relative humidity, so every product performs optimally with minimal intervention.

Q: Is the price history on this page current?

Yes. Prices are updated as of August 2026, include GST, and are ex-warehouse Ghaziabad. Call or WhatsApp +91-8595955752 for today's rate before ordering.

Q: Do you stock Loctite and Wacker products?

Yes. Loctite 243 threadlocker (₹531 / 50 ml) and Loctite 406 instant adhesive (₹234 / 20 ml) are one-part products — no mixing, so no pot life. Wacker Elastosil M 4511 (₹7,375 / 5.25 kg) is the RTV-2 silicone for flexible molds. All three ship PAN India from our Ghaziabad warehouse.

01Temperature vs Pot Life

How heat shortens your working time

Measured pot life at different ambient temperatures from NCR installations (2021–2026). Pot life is the working time from final mix to the onset of thickening. For full cure times, seasonal strategies and viscosity data, see Temperature & Pot Life Charts below.

Product	Ratio	At 25°C	At 35°C	At 40°C	At 44°C	Below 15°C
Bondone Clear Cast	3:1	370 min	180 min	120 min	60 min	Cure takes 10–14 days
Bondone Clear Cast UV Stable	3:1	370 min	180 min	120 min	60 min	Cure takes 10–14 days
Bondone Clearlam CC	2:1	45 min	18 min	12 min	8 min	Partial / slow cure
Bondone Flowtop	2:1	40 min	22 min	16 min	12 min	Will not cure
Bondone Silcrete	2:1	25 min	15 min	10 min	7 min	Will not cure
Jubitite Floro	3:1	45 min	25 min	15 min	10 min	Slow / incomplete
Lapox Ultra	100:80	80 min	30 min	20 min	12 min	Slow cure
Lapox Ultra Fast	1-part	No mixing — apply directly	N/A	N/A	N/A	Slow cure below 15°C
Lapox Fillo	100:80	75 min	25 min	15 min	10 min	Slow cure
Atul Metalam System B	2:1	30 min	15 min	10 min	6 min	Partial cure
Bondone Cleartite	100:100	65–80 min	35 min	20 min	12 min	Poor finish below 15°C
Bondone Bristle Grip A	100:10	25–35 min	15 min	8 min	5 min	Inconsistent
Wacker Elastosil M 4511	100:5	60 min	35 min	20 min	12 min	Slow cure
Loctite 243	1-part	No pot life — fixtures in 5 min on steel at 22°C	N/A	N/A	N/A	Slow cure — use activator on passive metals
Loctite 406	1-part	No pot life — fixtures in <5 sec on most plastics	N/A	N/A	N/A	Slower cure below 15°C — store 2–8°C

Key finding: At 44°C (common in NCR May–June), pot life drops by 55–80% across every product. Summer pours work best between 6–9 AM or in an AC-controlled room below 28°C. Never pour above 40°C ambient. Loctite 243 and Loctite 406 are one-part products — no mixing means no pot life, so the N/A columns list their fixture times at 22–25°C for reference.

02Humidity Failure Rates

Monsoon is where epoxy dies

Based on 318 documented indoor installations across Ghaziabad, Delhi, Noida, Gurgaon and Faridabad (2019–2026). Failure means a surface defect requiring sanding and a re-pour.

Relative Humidity	Clear Cast	Flowtop	Silcrete	Clearlam CC	Lapox Ultra
<60%	<1% failure	<2% failure	<1% failure	<1% failure	<1% failure
60–80%	5% failure	8% failure	3% failure	6% failure	4% failure
80–90%	35% failure	40% failure	22% failure	30% failure	28% failure
>90%	65% failure	70% failure	50% failure	60% failure	55% failure

Key finding: Humidity above 80% causes catastrophic failure across all products. Run a dehumidifier during the NCR monsoon (July–September). The ₹15,000 cloudy epoxy failure in our fix guide happened at 91% relative humidity.

03NCR Monthly Climate Guide

When to pour, month by month

Average temperature and humidity ranges for NCR cities from IMD data (2018–2025). Plan your application timing around these windows.

Month	Avg Temp	Avg RH	Recommended Products	Notes
Jan–Feb	8–22°C	55–70%	Clear Cast, Flowtop	Slow cure — allow 10–14 days
Mar–Apr	18–36°C	35–50%	All products	Ideal season — stable temps, low humidity
May–Jun	28–44°C	30–45%	Flowtop (morning pour), Lapox Ultra Fast	Pot life drops sharply. Pour before 9 AM
Jul–Sep	26–36°C	70–90%	Clear Cast (with dehumidifier)	Monsoon — dehumidifier mandatory above 80% RH
Oct–Nov	16–32°C	45–65%	All products	Second ideal window
Dec	6–20°C	60–75%	Clear Cast, Flowtop	Slow cure — expect 10+ days

Key finding: NCR has two ideal application windows — March–April and October–November. All products perform optimally in these months with minimal humidity intervention.

04Coverage & Yield Data

How far one pack actually goes

Measured coverage from field applications. Actual yield varies with surface porosity and applied thickness.

Product	Pack Size	Coverage Per Pack	Recommended Thickness	Yield At 2mm
Bondone Clear Cast	1.2kg	0.3–0.5 sqm	5–25mm (deep pour)	N/A
Bondone Clear Cast	12kg	3–5 sqm	5–25mm (deep pour)	N/A
Bondone Flowtop	7.5kg	4–6 sqm	1.5–2mm	3.75 sqm
Bondone Silcrete	7.5kg	5–8 sqm	0.5–1mm (primer coat)	N/A
Bondone Clearlam CC	1.5kg	0.8–1.2 sqm	1–2mm (lamination/thin coat)	0.75 sqm
Lapox Ultra	1.8kg	0.5–1 sqm	2–5mm	0.9 sqm

05Price History 2025–2026

What prices did over the last year

Prices include GST and are ex-warehouse Ghaziabad. Updated as of August 2026. WhatsApp for today's rate before ordering.

Product	Jul 2025	Jan 2026	Jul 2026	Change (YoY)
Bondone Clear Cast 1.2kg	₹710	₹731	₹731	+3%
Bondone Clear Cast 12kg	₹6,400	₹6,431	₹6,431	+0.5%
Bondone Clear Cast UV Stable 1.2kg	₹796	₹755	₹755	-5%
Bondone Clear Cast UV Stable 12kg	₹7,004	₹6,844	₹6,844	-2%
Bondone Clearlam CC 1.5kg	₹802	₹802	₹796	-0.7%
Bondone Flowtop 7.5kg	₹3,835	₹3,835	₹3,835	No change
Bondone Silcrete 7.5kg	₹3,610	₹3,658	₹3,658	+1.3%
Lapox Ultra 1.8kg	₹1,325	₹1,598	₹1,598	+21%
Atul Metalam System B 1.5kg	₹850	₹950	₹950	+12%
Bondone Cleartite 2kg	—	—	₹944	New product
Bondone Bristle Grip A 5.5kg	—	—	₹2,537	New product
Wacker Elastosil M 4511 5.25kg	—	—	₹7,375	New product
Loctite 243 50ml	—	—	₹531	New product
Loctite 406 20ml	—	—	₹234	New product

06Curing Time Reference

How long until it's fully cured

Full cure times at 25°C and 50% RH. Higher temperatures shorten cure; lower temperatures extend it significantly.

Product	Touch Dry	Light Traffic	Full Cure	Food Safe (Clear Cast)
Bondone Clear Cast	8–12 hrs	24 hrs	7 days	14 days
Bondone Flowtop	4–6 hrs	24 hrs	5–7 days	N/A
Bondone Silcrete	2–4 hrs	12 hrs	3–5 days	N/A
Bondone Clearlam CC	2–3 hrs	12 hrs	3–5 days	7 days
Lapox Ultra	4–6 hrs	24 hrs	5–7 days	N/A
Bondone Cleartite	4–5 hrs	8–9 hrs	24 hrs (bond strength)	N/A
Bondone Bristle Grip A	2–3 hrs	10–12 hrs	24 hrs (bond strength)	N/A
Wacker Elastosil M 4511	8–10 hrs (tack-free)	8–10 hrs (demold)	4 days at 23°C	N/A
Loctite 243	Fixture 5 min (steel)	10 min (aluminium), 15 min (passive metals)	24 hrs	N/A
Loctite 406	Fixture <5 sec (most plastics)	20–45 sec (steel), 10–20 sec (polycarbonate)	24–72 hrs	N/A

07Related Technical Guides

Specialised guides for specific tasks

This page is the master technical reference. For task-specific workflows, use the guides below — each links back here for the full data tables.

Mix Ratio Calculator

Brand-specific ratios, digital scale workflow, temperature-adjusted mixing. Bondone 3:1 · Lapox 100:80 · Flowtop 2:1

Cloudy Epoxy Fix

5 causes, decision tree, step-by-step repair, prevention checklist. Surface haze = 90% fixable.

Flooring Cost Calculator

Per-sq-ft all-in pricing, product selector, DIY vs contractor breakdown for India. ₹200/sq ft baseline.

08Project Experience Summary

Eight years of NCR installs

Metric	Count	Details
Total installations	500+	Residential, commercial, industrial across NCR
River table projects	50+	Resin for tables across India — Gurgaon farmhouse to Pune apartment
Product lines distributed	4	Bondone, Lapox, Jubitite, Atul Metalam, Wacker
Years in operation	8+	Founded by Jobin Samuel, Ghaziabad
Cities served	10+	Delhi, Ghaziabad, Noida, Gurgaon, Faridabad + PAN India delivery

Real story: One call I still remember — in July 2024 a contractor in Noida poured 9 m² of Flowtop during a week of 85% RH and it stayed tacky for six days. I told him to strip it and wait for October. We shipped a dehumidifier with the replacement kit, and that floor has cured hard for two years since.

09Quick Answers

Straight answers from the field

What is the pot life of Bondone Clear Cast at 35°C?

180 minutes at 35°C — half the 370-minute pot life at 25°C. At 44°C it collapses to 60 minutes, so pour before 9 AM in NCR summers.

Does humidity above 80% cause epoxy failure?

Yes. Above 80% relative humidity, failure rates jump to 22–40% across all five tested products, versus under 2% below 60% RH.

Can I pour epoxy below 15°C?

No. Bondone Flowtop and Silcrete will not cure below 15°C, and Clear Cast takes 10–14 days. Wait for the March–April window instead.

What are the two best months to pour epoxy in NCR?

2 ideal windows — March–April and October–November — with stable 16–36°C temperatures and 35–65% RH, based on 500+ installations.

10Choose Your Product

Which resin fits your pour

Match the result you need to the product, based on the field data above.

If you want to	Use	Why
Deep-pour casting (5–25mm)	Bondone Clear Cast	3:1 ratio, 370-min pot life at 25°C
Self-levelling floor coat	Bondone Flowtop	4–6 sqm per 7.5kg pack, 40-min pot life
Primer or sealer coat	Bondone Silcrete	0.5–1mm primer, chemical-resistant film
Lamination / thin coating	Bondone Clearlam CC	0.8–1.2 sqm per 1.5kg, self-levelling
Fast structural bond	Bondone Cleartite	Full bond strength in 24 hrs
Threadlocking metal fasteners	Loctite 243	One-part anaerobic — cures without air between close-fitting metal surfaces
Bond plastics or rubbers in seconds	Loctite 406	One-part cyanoacrylate — fixtures in under 5 sec, no mixing
Flexible silicone molds for casting	Wacker Elastosil M 4511	RTV-2 silicone — Shore A 12, pot life 60–90 min at 23°C

11FAQ

Questions buyers ask us

Why does epoxy get cloudy in NCR?

Humidity above 80% is the main cause. Clouding starts once relative humidity crosses 80%, and the failure rate jumps to 22–40% across all products. The worst case in our records was a ₹15,000 pour at 91% relative humidity.

How long does a 7.5kg Bondone Flowtop pack cover?

4–6 sqm at the recommended 1.5–2mm thickness, with a theoretical yield of 3.75 sqm at exactly 2mm.

Which products will not cure below 15°C?

Bondone Flowtop and Bondone Silcrete will not cure below 15°C. Clear Cast and Clearlam CC will cure but take 10–14 days, and the finish is poor below that temperature.

What is the best time of year to pour epoxy in NCR?

March–April and October–November. Temperatures sit in the 16–36°C range with 35–65% relative humidity, so every product performs optimally with minimal intervention.

Is the price history on this page current?

Yes. Prices are updated as of August 2026, include GST, and are ex-warehouse Ghaziabad. Call or WhatsApp +91-8595955752 for today's rate before ordering.

Do you stock Loctite and Wacker products?

Yes. Loctite 243 threadlocker (₹531 / 50 ml) and Loctite 406 instant adhesive (₹234 / 20 ml) are one-part products — no mixing, so no pot life. Wacker Elastosil M 4511 (₹7,375 / 5.25 kg) is the RTV-2 silicone for flexible molds. All three ship PAN India from our Ghaziabad warehouse.

12Temperature & Pot Life Charts

Pot life, full cure and viscosity across India's seasons

This section consolidates the temperature data formerly split across our temperature guide and this reference — full cure time, seasonal working strategies and how viscosity changes with the thermometer. As of August 2026 these are measured values from our Ghaziabad workshop and project sites across NCR.

Pot life by temperature lives in the master pot life table in section 01 above — 15 products across 25°C, 35°C, 40°C and 44°C. Key insight from that data: at 44°C, Flowtop pot life drops from 40 to 12 minutes — you lose most of your working time, so pour in the cool hours or in an AC-controlled room. For full spec sheets, see Bondone Clear Cast and Bondone Flowtop.

Temperature	Clear Cast Demold	Clear Cast Full Cure	Flowtop Full Cure
15°C	72 hours	14 days	14 days
25°C	24 hours	7 days	7 days
35°C	16 hours	5 days	5 days
44°C	12 hours	4 days	4 days

Summer strategy (35–45°C) — India's peak epoxy season

Summer is the most challenging time for epoxy work in India. High temperatures accelerate curing dramatically. Here's what we've learned from 500+ projects:

Pour in cool hours

Ambient temperature is 5–10°C lower between 6–9 AM or after 6 PM. This single habit buys back more working time than any product change.

Use slow-cure products

Bondone Clear Cast (370 min pot life at 25°C) gives you the most working time. Avoid Flowtop or Lapox Ultra for large pours in summer.

Pour smaller batches

The exothermic reaction generates its own heat. A 2 kg batch generates less heat than a 10 kg batch, giving you more working time.

Store epoxy below 30°C

Direct sunlight in a Delhi summer can heat resin to 50°C — that batch will cure in the cup before you pour it. Keep bottles in the shade.

Manage bubbles

At high temperatures epoxy is thinner and releases bubbles faster, but trapped bubbles also expand more. Use a torch immediately after pouring.

Winter North India strategy (5–20°C)

Delhi NCR winters (December–February) bring their own challenges. At 10–15°C, epoxy becomes thick as honey and cures at a glacial pace. Full cure for Clear Cast can take 10–14 days instead of 7.

Warm the bottles

Place resin and hardener in a water bath at 25–30°C for 20 minutes before mixing. This restores proper viscosity and working time.

Use a space heater

Keep the workspace at 20–25°C for the first 24 hours after pouring. Cold slows the chemical reaction significantly.

Never add extra hardener

A common mistake. Adding more hardener does not speed up cold curing — it ruins the ratio and creates brittle epoxy.

Expect longer demold time

At 15°C, wait 48–72 hours before demolding. At 25°C, 24 hours is usually enough.

Watch for condensation

When you bring cold epoxy into a warm room, moisture condenses on the surface. Wipe the surface dry before pouring.

Temperature's effect on viscosity

Epoxy resin is temperature-sensitive even before mixing. Match the viscosity to the job and most pour problems disappear.

1

Cold — honey consistency

At 15°C, Bondone Clear Cast is thick and difficult to pour, prone to trapping bubbles. Warm both bottles first.

2

Warm — water-like flow

At 35°C it flows like water. Warmer epoxy (30–35°C) gives better bubble release for thin pours, jewellery and small castings.

3

Sweet spot — deep pours

For deep pours like river tables, 25–30°C gives the best balance of flow and working time. This is the range we aim for every time.

Not sure how your climate affects your pour?

Send me your city and project type — I will tell you the pour window and the right resin for your conditions, and confirm dispatch from Ghaziabad in the same chat.

WhatsApp Jobin

13Shelf Life & Storage

Shelf life, storage rules and warning signs for Indian conditions

Heat, humidity and monsoon moisture decide how long your resin and hardener stay usable. Get storage wrong and a premium kit can fail before you open the lid. As of August 2026, these are the shelf life numbers printed on every kit we ship from Ghaziabad.

Component	Unopened Shelf Life	Opened Shelf Life	Storage Risk
Epoxy Resin (Part A)	2+ years	12 months	Low — crystallisation in cold
Hardener (Part B)	2 years	6 months	High — moisture, heat degrade it
Mixed epoxy	—	Pot life only (minutes)	Cannot be stored

Key insight: Hardener is the shelf-life bottleneck. If a kit sits unused for a year, the hardener — not the resin — decides whether it is still usable. Hardeners always degrade faster; moisture and heat are the enemies.

Signs your epoxy has gone bad

Cloudy or milky hardener

Moisture contamination. Do not use it — it will never cure properly.

Dark brown hardener

Normal aging if it was light amber. Test on a small batch before the real pour.

Solid chunks in hardener

The hardener has expired. Discard the whole kit.

Resin crystallisation

Solid, wax-like resin is reversible — warm to 30°C in a water bath and stir until clear.

Separation in resin

An oil-like layer on top. Stir thoroughly; if it will not remix, discard it.

Ammonia smell

A strong ammonia odour from the hardener means it has degraded beyond use.

Thick, honey-like hardener

Evaporation or moisture absorption. If it is hard to pour, discard it.

Six storage rules for Indian conditions

1

Store below 30°C

Keep kits in an air-conditioned room or the coolest corner of the workshop.

2

Seal airtight after opening

Squeeze the air out of the hardener bottle before you reseal it.

3

Add silica gel packs

Drop one into the storage box to absorb moisture.

4

Store bottles upright

Prevents leaks and keeps the cap sealed clean.

5

Label with the open date

Discard hardener after 6 months and resin after 12 months from opening.

6

Avoid temperature swings

Thermal cycling causes condensation inside the bottles.

Can you use expired epoxy?

Resin 1–6 months past expiry

Usually fine. Stir thoroughly and test on a small surface first.

Hardener 1–3 months past expiry

May work with longer cure times. If it is cloudy, discard it.

Both expired 6+ months

Replace both. The chemical balance shifts and results become unpredictable.

Structural projects

Never use expired epoxy where strength matters — it may be compromised.

Not sure which product?

Send Jobin your application, substrate and working temperature. He'll recommend the right ratio, pot life and coverage from this same field data.